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 daxu for unit, mepo for func, and sovi for area. Each creates a local scope.
Open a block with KIND NAME on one line.
Close the innermost open block with bim on its own line.
KIND is one of daxu, mepo, sovi; NAME is n_ followed by exactly eight lowercase letters and is unique in the program.
A binding statement (let) is kep 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 rud 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:
kep x_b 1898
kep x_a 9018
sovi n_imcgrbkz
kep x_a 7207
rud p_qdggfdxg
bim
sovi n_kamcsxht
kep x_a 8346
mepo n_iqloaety
kep x_a 7330
rud p_eeughnii
bim
daxu n_zsweikhp
kep x_a 5661
bim
bim
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:
kep x_b 6809
kep x_a 8528
sovi n_cltuwgfr
kep x_a 7436
rud p_jnevfcow
bim
mepo n_hjmowkks
mepo n_xgsdplot
kep x_a 1433
rud p_fsvjabvb
bim
sovi n_prnbhatf
kep x_a 4859
mepo n_xgfwoefi
kep x_a 9856
rud p_bipumgzk
bim
bim
bim
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:
kep x_b 4546
kep x_a 4315
mepo n_qadbgcyx
kep x_a 6944
rud p_ojcebpfp
bim
sovi n_rhfrcekw
kep x_a 4379
sovi n_ackhjhth
kep x_a 4681
rud p_kiumvlki
bim
mepo n_pxnqtsdg
kep x_a 5179
mepo n_fjetgddq
kep x_a 1459
mepo n_nmzxtisc
kep x_a 9594
rud p_jfpamrpj
rud p_rgdikjut
bim
bim
bim
bim
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:
kep x_b 5207
kep x_a 3885
daxu n_ktlkverx
kep x_a 6602
rud p_gslvtmzu
bim
mepo n_qoirzpkk
daxu n_fkzkdvuv
kep x_a 7615
rud p_ryjhouhq
bim
sovi n_ukyxkutx
kep x_a 1895
rud p_svnicwdv
rud p_ebipavym
rud p_reqpqjrs
bim
bim
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:
kep x_b 2766
kep x_a 1610
mepo n_gfudixmw
kep x_a 2935
rud p_kvlbgeik
bim
daxu n_gxfollqb
kep x_a 9814
sovi n_cpzveext
kep x_a 4727
rud p_vohnzzvv
bim
mepo n_cionriid
kep x_a 7140
mepo n_lyhdpyzi
kep x_a 4247
rud p_bmzkvnzq
rud p_zdaufrur
rud p_zboxlivj
rud p_xliowxqj
bim
bim
bim
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:
kep x_b 4691
kep x_a 6106
daxu n_ndmozqvz
kep x_a 8715
rud p_dzpekxyv
bim
daxu n_jjeqyguo
kep x_a 7168
sovi n_ebmmneso
kep x_a 5166
rud p_xkunojzw
bim
mepo n_muypqkhe
mepo n_iimjvvgl
kep x_a 1537
daxu n_mfuypmsh
kep x_a 2852
rud p_ulxdbrhn
rud p_pjpriolj
rud p_bytfzykt
rud p_cgvpkfje
rud p_risqwuuh
bim
bim
bim
bim
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:
kep x_b 1986
kep x_a 5784
mepo n_ummrqrxg
kep x_a 7844
rud p_wcufesdb
bim
mepo n_ynivrhvj
kep x_a 5274
sovi n_eckgojog
kep x_a 9034
rud p_ipbqefnk
bim
sovi n_ejfvgsga
kep x_a 3009
rud p_qzmmflrc
rud p_jwnvtybq
rud p_lvklijav
rud p_kbbfgwtw
rud p_fbtrlfld
rud p_gkxvrjso
bim
bim
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:
kep x_b 9863
kep x_a 7572
sovi n_xgurnmrs
kep x_a 1384
rud p_jympynny
bim
sovi n_bmjlhswg
sovi n_byeljvsd
kep x_a 6584
rud p_ridfgvom
bim
sovi n_wmooegnc
kep x_a 4308
daxu n_sirozwri
kep x_a 7107
rud p_kxpsrmub
rud p_nlquarhb
rud p_upeyzene
rud p_nazcxkpw
rud p_cewjhgle
rud p_kbnftnwh
rud p_yijhnzor
bim
bim
bim
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:
kep x_a 6841
sovi n_aogrngaq
kep x_a 3169
rud p_hlnzajxz
bim
mepo n_jnnwfaip
kep x_a 7274
daxu n_bghiwyrj
kep x_a 9106
daxu n_vylcytpr
kep x_a 2808
daxu n_kfjsykiq
kep x_a 5562
sovi n_jurzmrha
kep x_a 1383
sovi n_uvbznsja
kep x_a 7268
mepo n_apqesvpo
kep x_a 7232
mepo n_ctwunaoq
kep x_a 3152
rud p_tvhktbuy
bim
sovi n_rzevmwyf
kep x_a 3055
daxu n_nrvpdgju
kep x_a 3070
mepo n_zzwiythh
kep x_a 3949
mepo n_xkzgrucd
kep x_a 5815
sovi n_jsgzqmem
kep x_a 5389
sovi n_cpcdivuo
kep x_a 9896
mepo n_ejmonzms
kep x_a 4845
mepo n_tcarhfbf
kep x_a 3381
mepo n_xswzrvul
kep x_a 1003
rud p_hnrupvpa
rud p_bmsalmxo
rud p_rlgymkbt
rud p_wctpwbbt
rud p_tmbtuzfj
rud p_muzozqdm
rud p_ijnhuefv
rud p_rvxoyjor
rud p_bbguomfh
rud p_zdnbmmpc
rud p_jrcydako
rud p_veyuxvtv
rud p_jbjjrgbl
rud p_xujohgtw
rud p_xjcoduls
rud p_xhwkcvsw
rud p_hsyxonfz
rud p_hhnmqkyw
rud p_rtslrigu
rud p_spzrngoc
rud p_mvijgogu
rud p_xrbxktui
rud p_gogiprhm
rud p_dpoaqgbz
rud p_eykqipeq
rud p_qobdkzny
rud p_kfxckomj
rud p_cwghfror
rud p_qlymtpph
rud p_vgxhdeep
rud p_kvigmnlt
rud p_oaingbdt
bim
bim
bim
bim
bim
bim
bim
bim
bim
bim
bim
bim
bim
bim
bim
bim
AST: