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 nezu for unit, sapu for func, and jomi for area. Each creates a local scope.
Open a block with KIND NAME on one line.
Close the innermost open block with wor on its own line.
KIND is one of nezu, sapu, jomi; NAME is n_ followed by exactly eight lowercase letters and is unique in the program.
A binding statement (let) is fal 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 kiv 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:
fal x_b 1898
fal x_a 9018
jomi n_imcgrbkz
fal x_a 7207
kiv p_qdggfdxg
wor
jomi n_kamcsxht
fal x_a 8346
sapu n_iqloaety
fal x_a 7330
kiv p_eeughnii
wor
nezu n_zsweikhp
fal x_a 5661
wor
wor
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:
fal x_b 6809
fal x_a 8528
jomi n_cltuwgfr
fal x_a 7436
kiv p_jnevfcow
wor
sapu n_hjmowkks
sapu n_xgsdplot
fal x_a 1433
kiv p_fsvjabvb
wor
jomi n_prnbhatf
fal x_a 4859
sapu n_xgfwoefi
fal x_a 9856
kiv p_bipumgzk
wor
wor
wor
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:
fal x_b 4546
fal x_a 4315
sapu n_qadbgcyx
fal x_a 6944
kiv p_ojcebpfp
wor
jomi n_rhfrcekw
fal x_a 4379
jomi n_ackhjhth
fal x_a 4681
kiv p_kiumvlki
wor
sapu n_pxnqtsdg
fal x_a 5179
sapu n_fjetgddq
fal x_a 1459
sapu n_nmzxtisc
fal x_a 9594
kiv p_jfpamrpj
kiv p_rgdikjut
wor
wor
wor
wor
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:
fal x_b 5207
fal x_a 3885
nezu n_ktlkverx
fal x_a 6602
kiv p_gslvtmzu
wor
sapu n_qoirzpkk
nezu n_fkzkdvuv
fal x_a 7615
kiv p_ryjhouhq
wor
jomi n_ukyxkutx
fal x_a 1895
kiv p_svnicwdv
kiv p_ebipavym
kiv p_reqpqjrs
wor
wor
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:
fal x_b 2766
fal x_a 1610
sapu n_gfudixmw
fal x_a 2935
kiv p_kvlbgeik
wor
nezu n_gxfollqb
fal x_a 9814
jomi n_cpzveext
fal x_a 4727
kiv p_vohnzzvv
wor
sapu n_cionriid
fal x_a 7140
sapu n_lyhdpyzi
fal x_a 4247
kiv p_bmzkvnzq
kiv p_zdaufrur
kiv p_zboxlivj
kiv p_xliowxqj
wor
wor
wor
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:
fal x_b 4691
fal x_a 6106
nezu n_ndmozqvz
fal x_a 8715
kiv p_dzpekxyv
wor
nezu n_jjeqyguo
fal x_a 7168
jomi n_ebmmneso
fal x_a 5166
kiv p_xkunojzw
wor
sapu n_muypqkhe
sapu n_iimjvvgl
fal x_a 1537
nezu n_mfuypmsh
fal x_a 2852
kiv p_ulxdbrhn
kiv p_pjpriolj
kiv p_bytfzykt
kiv p_cgvpkfje
kiv p_risqwuuh
wor
wor
wor
wor
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:
fal x_b 1986
fal x_a 5784
sapu n_ummrqrxg
fal x_a 7844
kiv p_wcufesdb
wor
sapu n_ynivrhvj
fal x_a 5274
jomi n_eckgojog
fal x_a 9034
kiv p_ipbqefnk
wor
jomi n_ejfvgsga
fal x_a 3009
kiv p_qzmmflrc
kiv p_jwnvtybq
kiv p_lvklijav
kiv p_kbbfgwtw
kiv p_fbtrlfld
kiv p_gkxvrjso
wor
wor
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:
fal x_b 9863
fal x_a 7572
jomi n_xgurnmrs
fal x_a 1384
kiv p_jympynny
wor
jomi n_bmjlhswg
jomi n_byeljvsd
fal x_a 6584
kiv p_ridfgvom
wor
jomi n_wmooegnc
fal x_a 4308
nezu n_sirozwri
fal x_a 7107
kiv p_kxpsrmub
kiv p_nlquarhb
kiv p_upeyzene
kiv p_nazcxkpw
kiv p_cewjhgle
kiv p_kbnftnwh
kiv p_yijhnzor
wor
wor
wor
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:
fal x_a 1596
jomi n_eoccaddf
fal x_a 2616
kiv p_jcckuckx
wor
nezu n_fjwiiaoa
fal x_a 2640
sapu n_wummwmwp
fal x_a 8726
nezu n_nfbsqzpa
fal x_a 3742
jomi n_cxzgtwgv
fal x_a 3171
sapu n_fbrqujdm
fal x_a 6621
sapu n_fpicxdsj
fal x_a 2232
jomi n_ygyydrip
fal x_a 7355
sapu n_nysuwtuj
fal x_a 1675
kiv p_qvxnehxb
wor
nezu n_pzjgugkv
fal x_a 1466
nezu n_vqomlisu
fal x_a 5326
jomi n_lbxmruhv
fal x_a 8930
jomi n_kjkaribw
fal x_a 5331
jomi n_eqfwerlx
fal x_a 1098
nezu n_ntgfuktw
fal x_a 7711
nezu n_epkfvsxi
fal x_a 3895
sapu n_drbpnqxl
fal x_a 9169
nezu n_jnhimagi
fal x_a 5658
kiv p_gadyzgdc
kiv p_bpcoyvgn
kiv p_qajxrtje
kiv p_xgrtahvy
kiv p_gtgyapwa
kiv p_drxfwjwg
kiv p_ijwvfydr
kiv p_dxgysuhb
wor
wor
wor
wor
wor
wor
wor
wor
wor
wor
wor
wor
wor
wor
wor
wor
AST: