Follow the task and return only the requested answer, without explanation or Markdown fences.
Parse the complete program into its neutral JSON abstract syntax tree.
Preserve every node, parent-child relationship, statement order, scope kind and name, variable and value, and nop payload.
Do not evaluate bindings or discard shadowed bindings or nop statements.
The root is a JSON object with exactly one field, body, containing an ordered array of statements.
A scope node has exactly these fields: {"type":"scope","kind":"func","name":"n_abcdefgh","body":[]}.
Its kind is the semantic category unit, func, or area, using the mapping in SYNTAX even when the input keywords differ.
A binding node has exactly these fields: {"type":"let","variable":"x_a","value":1739}.
A nop node has exactly these fields: {"type":"nop","payload":"p_abcdefgh"}.
Use the actual names, variables, integer values and payloads from the input, not these illustrative schema values.
Closing lines determine the end of a scope body and do not create AST nodes.
Object field order and whitespace may vary; body-array order must match the source statement order.
Return only the complete JSON AST, without Markdown fences or explanation.

SYNTAX
The kind keywords are raku for unit, weso for func, and bifo for area. Each creates a local scope.
Open a block with KIND NAME on one line.
Close the innermost open block with hud KIND NAME on one line. KIND and NAME must repeat that block's opening keyword and name.
KIND is one of raku, weso, bifo; NAME is n_ followed by exactly eight lowercase letters and is unique in the program.
A binding statement (let) is zim VARIABLE VALUE. VARIABLE is x_ followed by one letter a through f; VALUE is a four digit integer from 1000 through 9999.
Within one scope a variable is bound at most once. Inner bindings hide outer bindings until their scope closes.
A no-effect statement (nop) is vop PAYLOAD. PAYLOAD is p_ followed by eight lowercase letters.
The observation marker is probe PROBE_ID VARIABLE. PROBE_ID is q_ followed by eight lowercase letters.
Use one statement per line. Indentation has no meaning; scope is determined solely by explicit opening and closing lines.

EXAMPLES
Example 1
Program:
zim x_b 1898
zim x_a 9018
bifo n_imcgrbkz
zim x_a 7207
vop p_qdggfdxg
hud bifo n_imcgrbkz
bifo n_kamcsxht
zim x_a 8346
weso n_iqloaety
zim x_a 7330
vop p_eeughnii
hud weso n_iqloaety
raku n_zsweikhp
zim x_a 5661
hud raku n_zsweikhp
hud bifo n_kamcsxht
AST:
{"body":[{"type":"let","value":1898,"variable":"x_b"},{"type":"let","value":9018,"variable":"x_a"},{"body":[{"type":"let","value":7207,"variable":"x_a"},{"payload":"p_qdggfdxg","type":"nop"}],"kind":"area","name":"n_imcgrbkz","type":"scope"},{"body":[{"type":"let","value":8346,"variable":"x_a"},{"body":[{"type":"let","value":7.33E+3,"variable":"x_a"},{"payload":"p_eeughnii","type":"nop"}],"kind":"func","name":"n_iqloaety","type":"scope"},{"body":[{"type":"let","value":5661,"variable":"x_a"}],"kind":"unit","name":"n_zsweikhp","type":"scope"}],"kind":"area","name":"n_kamcsxht","type":"scope"}]}

Example 2
Program:
zim x_b 6809
zim x_a 8528
bifo n_cltuwgfr
zim x_a 7436
vop p_jnevfcow
hud bifo n_cltuwgfr
weso n_hjmowkks
weso n_xgsdplot
zim x_a 1433
vop p_fsvjabvb
hud weso n_xgsdplot
bifo n_prnbhatf
zim x_a 4859
weso n_xgfwoefi
zim x_a 9856
vop p_bipumgzk
hud weso n_xgfwoefi
hud bifo n_prnbhatf
hud weso n_hjmowkks
AST:
{"body":[{"type":"let","value":6809,"variable":"x_b"},{"type":"let","value":8528,"variable":"x_a"},{"body":[{"type":"let","value":7436,"variable":"x_a"},{"payload":"p_jnevfcow","type":"nop"}],"kind":"area","name":"n_cltuwgfr","type":"scope"},{"body":[{"body":[{"type":"let","value":1433,"variable":"x_a"},{"payload":"p_fsvjabvb","type":"nop"}],"kind":"func","name":"n_xgsdplot","type":"scope"},{"body":[{"type":"let","value":4859,"variable":"x_a"},{"body":[{"type":"let","value":9856,"variable":"x_a"},{"payload":"p_bipumgzk","type":"nop"}],"kind":"func","name":"n_xgfwoefi","type":"scope"}],"kind":"area","name":"n_prnbhatf","type":"scope"}],"kind":"func","name":"n_hjmowkks","type":"scope"}]}

Example 3
Program:
zim x_b 4546
zim x_a 4315
weso n_qadbgcyx
zim x_a 6944
vop p_ojcebpfp
hud weso n_qadbgcyx
bifo n_rhfrcekw
zim x_a 4379
bifo n_ackhjhth
zim x_a 4681
vop p_kiumvlki
hud bifo n_ackhjhth
weso n_pxnqtsdg
zim x_a 5179
weso n_fjetgddq
zim x_a 1459
weso n_nmzxtisc
zim x_a 9594
vop p_jfpamrpj
vop p_rgdikjut
hud weso n_nmzxtisc
hud weso n_fjetgddq
hud weso n_pxnqtsdg
hud bifo n_rhfrcekw
AST:
{"body":[{"type":"let","value":4546,"variable":"x_b"},{"type":"let","value":4315,"variable":"x_a"},{"body":[{"type":"let","value":6944,"variable":"x_a"},{"payload":"p_ojcebpfp","type":"nop"}],"kind":"func","name":"n_qadbgcyx","type":"scope"},{"body":[{"type":"let","value":4379,"variable":"x_a"},{"body":[{"type":"let","value":4681,"variable":"x_a"},{"payload":"p_kiumvlki","type":"nop"}],"kind":"area","name":"n_ackhjhth","type":"scope"},{"body":[{"type":"let","value":5179,"variable":"x_a"},{"body":[{"type":"let","value":1459,"variable":"x_a"},{"body":[{"type":"let","value":9594,"variable":"x_a"},{"payload":"p_jfpamrpj","type":"nop"},{"payload":"p_rgdikjut","type":"nop"}],"kind":"func","name":"n_nmzxtisc","type":"scope"}],"kind":"func","name":"n_fjetgddq","type":"scope"}],"kind":"func","name":"n_pxnqtsdg","type":"scope"}],"kind":"area","name":"n_rhfrcekw","type":"scope"}]}

Example 4
Program:
zim x_b 5207
zim x_a 3885
raku n_ktlkverx
zim x_a 6602
vop p_gslvtmzu
hud raku n_ktlkverx
weso n_qoirzpkk
raku n_fkzkdvuv
zim x_a 7615
vop p_ryjhouhq
hud raku n_fkzkdvuv
bifo n_ukyxkutx
zim x_a 1895
vop p_svnicwdv
vop p_ebipavym
vop p_reqpqjrs
hud bifo n_ukyxkutx
hud weso n_qoirzpkk
AST:
{"body":[{"type":"let","value":5207,"variable":"x_b"},{"type":"let","value":3885,"variable":"x_a"},{"body":[{"type":"let","value":6602,"variable":"x_a"},{"payload":"p_gslvtmzu","type":"nop"}],"kind":"unit","name":"n_ktlkverx","type":"scope"},{"body":[{"body":[{"type":"let","value":7615,"variable":"x_a"},{"payload":"p_ryjhouhq","type":"nop"}],"kind":"unit","name":"n_fkzkdvuv","type":"scope"},{"body":[{"type":"let","value":1895,"variable":"x_a"},{"payload":"p_svnicwdv","type":"nop"},{"payload":"p_ebipavym","type":"nop"},{"payload":"p_reqpqjrs","type":"nop"}],"kind":"area","name":"n_ukyxkutx","type":"scope"}],"kind":"func","name":"n_qoirzpkk","type":"scope"}]}

Example 5
Program:
zim x_b 2766
zim x_a 1610
weso n_gfudixmw
zim x_a 2935
vop p_kvlbgeik
hud weso n_gfudixmw
raku n_gxfollqb
zim x_a 9814
bifo n_cpzveext
zim x_a 4727
vop p_vohnzzvv
hud bifo n_cpzveext
weso n_cionriid
zim x_a 7140
weso n_lyhdpyzi
zim x_a 4247
vop p_bmzkvnzq
vop p_zdaufrur
vop p_zboxlivj
vop p_xliowxqj
hud weso n_lyhdpyzi
hud weso n_cionriid
hud raku n_gxfollqb
AST:
{"body":[{"type":"let","value":2766,"variable":"x_b"},{"type":"let","value":1.61E+3,"variable":"x_a"},{"body":[{"type":"let","value":2935,"variable":"x_a"},{"payload":"p_kvlbgeik","type":"nop"}],"kind":"func","name":"n_gfudixmw","type":"scope"},{"body":[{"type":"let","value":9814,"variable":"x_a"},{"body":[{"type":"let","value":4727,"variable":"x_a"},{"payload":"p_vohnzzvv","type":"nop"}],"kind":"area","name":"n_cpzveext","type":"scope"},{"body":[{"type":"let","value":7.14E+3,"variable":"x_a"},{"body":[{"type":"let","value":4247,"variable":"x_a"},{"payload":"p_bmzkvnzq","type":"nop"},{"payload":"p_zdaufrur","type":"nop"},{"payload":"p_zboxlivj","type":"nop"},{"payload":"p_xliowxqj","type":"nop"}],"kind":"func","name":"n_lyhdpyzi","type":"scope"}],"kind":"func","name":"n_cionriid","type":"scope"}],"kind":"unit","name":"n_gxfollqb","type":"scope"}]}

Example 6
Program:
zim x_b 4691
zim x_a 6106
raku n_ndmozqvz
zim x_a 8715
vop p_dzpekxyv
hud raku n_ndmozqvz
raku n_jjeqyguo
zim x_a 7168
bifo n_ebmmneso
zim x_a 5166
vop p_xkunojzw
hud bifo n_ebmmneso
weso n_muypqkhe
weso n_iimjvvgl
zim x_a 1537
raku n_mfuypmsh
zim x_a 2852
vop p_ulxdbrhn
vop p_pjpriolj
vop p_bytfzykt
vop p_cgvpkfje
vop p_risqwuuh
hud raku n_mfuypmsh
hud weso n_iimjvvgl
hud weso n_muypqkhe
hud raku n_jjeqyguo
AST:
{"body":[{"type":"let","value":4691,"variable":"x_b"},{"type":"let","value":6106,"variable":"x_a"},{"body":[{"type":"let","value":8715,"variable":"x_a"},{"payload":"p_dzpekxyv","type":"nop"}],"kind":"unit","name":"n_ndmozqvz","type":"scope"},{"body":[{"type":"let","value":7168,"variable":"x_a"},{"body":[{"type":"let","value":5166,"variable":"x_a"},{"payload":"p_xkunojzw","type":"nop"}],"kind":"area","name":"n_ebmmneso","type":"scope"},{"body":[{"body":[{"type":"let","value":1537,"variable":"x_a"},{"body":[{"type":"let","value":2852,"variable":"x_a"},{"payload":"p_ulxdbrhn","type":"nop"},{"payload":"p_pjpriolj","type":"nop"},{"payload":"p_bytfzykt","type":"nop"},{"payload":"p_cgvpkfje","type":"nop"},{"payload":"p_risqwuuh","type":"nop"}],"kind":"unit","name":"n_mfuypmsh","type":"scope"}],"kind":"func","name":"n_iimjvvgl","type":"scope"}],"kind":"func","name":"n_muypqkhe","type":"scope"}],"kind":"unit","name":"n_jjeqyguo","type":"scope"}]}

Example 7
Program:
zim x_b 1986
zim x_a 5784
weso n_ummrqrxg
zim x_a 7844
vop p_wcufesdb
hud weso n_ummrqrxg
weso n_ynivrhvj
zim x_a 5274
bifo n_eckgojog
zim x_a 9034
vop p_ipbqefnk
hud bifo n_eckgojog
bifo n_ejfvgsga
zim x_a 3009
vop p_qzmmflrc
vop p_jwnvtybq
vop p_lvklijav
vop p_kbbfgwtw
vop p_fbtrlfld
vop p_gkxvrjso
hud bifo n_ejfvgsga
hud weso n_ynivrhvj
AST:
{"body":[{"type":"let","value":1986,"variable":"x_b"},{"type":"let","value":5784,"variable":"x_a"},{"body":[{"type":"let","value":7844,"variable":"x_a"},{"payload":"p_wcufesdb","type":"nop"}],"kind":"func","name":"n_ummrqrxg","type":"scope"},{"body":[{"type":"let","value":5274,"variable":"x_a"},{"body":[{"type":"let","value":9034,"variable":"x_a"},{"payload":"p_ipbqefnk","type":"nop"}],"kind":"area","name":"n_eckgojog","type":"scope"},{"body":[{"type":"let","value":3009,"variable":"x_a"},{"payload":"p_qzmmflrc","type":"nop"},{"payload":"p_jwnvtybq","type":"nop"},{"payload":"p_lvklijav","type":"nop"},{"payload":"p_kbbfgwtw","type":"nop"},{"payload":"p_fbtrlfld","type":"nop"},{"payload":"p_gkxvrjso","type":"nop"}],"kind":"area","name":"n_ejfvgsga","type":"scope"}],"kind":"func","name":"n_ynivrhvj","type":"scope"}]}

Example 8
Program:
zim x_b 9863
zim x_a 7572
bifo n_xgurnmrs
zim x_a 1384
vop p_jympynny
hud bifo n_xgurnmrs
bifo n_bmjlhswg
bifo n_byeljvsd
zim x_a 6584
vop p_ridfgvom
hud bifo n_byeljvsd
bifo n_wmooegnc
zim x_a 4308
raku n_sirozwri
zim x_a 7107
vop p_kxpsrmub
vop p_nlquarhb
vop p_upeyzene
vop p_nazcxkpw
vop p_cewjhgle
vop p_kbnftnwh
vop p_yijhnzor
hud raku n_sirozwri
hud bifo n_wmooegnc
hud bifo n_bmjlhswg
AST:
{"body":[{"type":"let","value":9863,"variable":"x_b"},{"type":"let","value":7572,"variable":"x_a"},{"body":[{"type":"let","value":1384,"variable":"x_a"},{"payload":"p_jympynny","type":"nop"}],"kind":"area","name":"n_xgurnmrs","type":"scope"},{"body":[{"body":[{"type":"let","value":6584,"variable":"x_a"},{"payload":"p_ridfgvom","type":"nop"}],"kind":"area","name":"n_byeljvsd","type":"scope"},{"body":[{"type":"let","value":4308,"variable":"x_a"},{"body":[{"type":"let","value":7107,"variable":"x_a"},{"payload":"p_kxpsrmub","type":"nop"},{"payload":"p_nlquarhb","type":"nop"},{"payload":"p_upeyzene","type":"nop"},{"payload":"p_nazcxkpw","type":"nop"},{"payload":"p_cewjhgle","type":"nop"},{"payload":"p_kbnftnwh","type":"nop"},{"payload":"p_yijhnzor","type":"nop"}],"kind":"unit","name":"n_sirozwri","type":"scope"}],"kind":"area","name":"n_wmooegnc","type":"scope"}],"kind":"area","name":"n_bmjlhswg","type":"scope"}]}

TEST
Program:
zim x_a 5414
raku n_hzqfrfxj
zim x_a 6574
vop p_owitdpeh
hud raku n_hzqfrfxj
bifo n_kykqrkda
zim x_a 4537
weso n_fasintib
zim x_a 8806
bifo n_pixpmibn
zim x_a 1035
raku n_emrydohk
zim x_a 8211
vop p_nlprpruv
hud raku n_emrydohk
weso n_ujajhoyh
zim x_a 9052
raku n_pdbmtxyq
zim x_a 7781
weso n_mqhcfixr
zim x_a 8744
bifo n_cpaktnqy
zim x_a 4832
raku n_ulzxdkvn
zim x_a 2639
vop p_mnvufqnc
vop p_rjakwxyi
vop p_uupfpxwk
vop p_yspvjepr
vop p_naewufvd
vop p_jpqpbekl
vop p_wubkwafk
vop p_htwseaum
hud raku n_ulzxdkvn
hud bifo n_cpaktnqy
hud weso n_mqhcfixr
hud raku n_pdbmtxyq
hud weso n_ujajhoyh
hud bifo n_pixpmibn
hud weso n_fasintib
hud bifo n_kykqrkda
AST: