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LOANWORD ISOLATION TEST
Separating uniquely-Sinhala signal from shared Pali loanwords
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Loading cross-language pharmaceutical vocabulary...
  60 concepts across 5 languages

Term classification:
  Sinhala total:           102 terms
  Sinhala-only (unique):    75 terms  (not in Pali, Hindi, Tamil, or Malayalam)
  Sinhala minus Pali:       78 terms  (Sinhala but not in Pali)
  Shared Sinhala+Pali:      24 terms  (loanword layer)
  Shared Sinhala+any:       27 terms  (shared with >=1 other language)
  Pali-only:                78 terms  (in Pali but not Sinhala)

  Sinhala-only terms:
    aburanava
    aeha
    ala
    ara
    asa
    ata
    atha
    athisaraya
    aushadha
    bada
    beheth
    davasa
    deka
    diya
    gadanava
    gara
    gedi
    gena
    ghi
    ghritaya
    gita
    gitel
    gula
    guliya
    hadanava
    hakuru
    imbima
    inguru
    isa
    kakala
    kalanda
    kara
    kasaya
    kassa
    kata
    kiri
    kola
    kushta roga
    kusta
    kwathaya
    leda
    lunu
    madu
    mal
    mas
    masa
    mee
    nahaya
    narahara
    oluwa
    papuwa
    pata
    patthu
    peni
    peranava
    peththa
    pilika
    pisinawa
    potta
    rana
    sodanu
    sota
    sunanava
    surna
    tala tel
    talatel
    thailaya
    tuna
    uda
    ugura
    ula
    una
    vedanava
    visha
    viyala

  Shared Sinhala+Pali terms:
    atisara
    churna
    eka
    gala
    guda
    kalka
    kamala
    kasa
    lepa
    mukha
    mula
    nasa
    pathya
    phala
    roga
    sakkara
    sira
    sula
    tela
    tula
    udara
    ura
    visa
    vrana

  Sinhala-minus-Pali terms (includes those shared with Hindi/Tamil/Malayalam but not Pali):
    (Plus 3 terms shared with Hindi/Tamil/Malayalam but not Pali)
    aburanava
    aeha
    ala
    ara
    asa
    ata
    atha
    athisaraya
    aushadha
    bada
    beheth
    davasa
    deka
    dena *
    diya
    gadanava
    gara
    gedi
    gena
    ghi
    ghritaya
    gita
    gitel
    gula
    guliya
    hadanava
    hakuru
    imbima
    inguru
    isa
    kakala
    kalanda
    kara
    kasaya
    kassa
    kata
    kiri
    kola
    kushta roga
    kusta
    kwathaya
    leda
    lunu
    madu
    mal
    mas
    masa
    mee
    nahaya
    narahara
    oluwa
    pani *
    papuwa
    pata
    patthu
    peni
    peranava
    peththa
    pilika
    pisinawa
    potta
    rana
    sini *
    sodanu
    sota
    sunanava
    surna
    tala tel
    talatel
    thailaya
    tuna
    uda
    ugura
    ula
    una
    vedanava
    visha
    viyala

Loading and decoding Voynich corpus...
  35,916 tokens, 7,733 types

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H12 MATCHES BY VOCABULARY GROUP
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  All Sinhala                 :  5,094 tokens (14.18%)   28 types
  Sinhala-ONLY (unique)       :  3,772 tokens (10.50%)   17 types
  Sinhala minus Pali          :  3,788 tokens (10.55%)   18 types
  Shared Sinhala+Pali         :  1,306 tokens ( 3.64%)   10 types
  Pali-only                   :      0 tokens ( 0.00%)    0 types

  All Sinhala matched terms:
    ula               1,131 tokens
    gena                797 tokens
    ura                 607 tokens
    ara                 461 tokens
    ala                 348 tokens
    gara                331 tokens
    gala                302 tokens
    uda                 182 tokens
    mula                178 tokens
    gula                135 tokens
    leda                129 tokens
    ugura               104 tokens
    sula                 75 tokens
    kara                 70 tokens
    tula                 67 tokens
    ... and 13 more

  Sinhala-ONLY (unique) matched terms:
    ula               1,131 tokens
    gena                797 tokens
    ara                 461 tokens
    ala                 348 tokens
    gara                331 tokens
    uda                 182 tokens
    gula                135 tokens
    leda                129 tokens
    ugura               104 tokens
    kara                 70 tokens
    ata                  64 tokens
    asa                  10 tokens
    masa                  6 tokens
    kata                  1 tokens
    rana                  1 tokens
    ... and 2 more

  Sinhala minus Pali matched terms:
    ula               1,131 tokens
    gena                797 tokens
    ara                 461 tokens
    ala                 348 tokens
    gara                331 tokens
    uda                 182 tokens
    gula                135 tokens
    leda                129 tokens
    ugura               104 tokens
    kara                 70 tokens
    ata                  64 tokens
    dena                 16 tokens
    asa                  10 tokens
    masa                  6 tokens
    kata                  1 tokens
    ... and 3 more

  Shared Sinhala+Pali matched terms:
    ura                 607 tokens
    gala                302 tokens
    mula                178 tokens
    sula                 75 tokens
    tula                 67 tokens
    udara                51 tokens
    guda                  9 tokens
    kasa                  8 tokens
    mukha                 7 tokens
    phala                 2 tokens

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LOANWORD COMPOSITION OF SINHALA MATCHES
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  Of 5,094 Sinhala-matching tokens:
    Sinhala-only (unique):      3,772  ( 74.0%)
    Shared with Pali:           1,306  ( 25.6%)
    Sinhala minus Pali:         3,788  ( 74.4%)

Running 200 random decoders...
  ... trial 1/200
  ... trial 51/200
  ... trial 101/200
  ... trial 151/200
  Done.

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RESULTS: H12 vs RANDOM DECODERS (per vocabulary group)
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  Group                          H12 tok   Rnd avg   Rnd std   Z-score  Beat H12
  ----------------------------  --------  --------  --------  --------  --------
  All Sinhala                      5,094    2514.7    1325.5      1.95    6/200
  Sinhala-ONLY (unique)            3,772    2039.2    1169.9      1.48   21/200
  Sinhala minus Pali               3,788    2135.5    1172.0      1.41   24/200
  Shared Sinhala+Pali              1,306     379.2     422.3      2.19    8/200
  Pali-only                            0      15.6      28.9     -0.54  200/200

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KEY FINDING: LOANWORD ISOLATION EFFECT
================================================================================

  Z-score (all Sinhala):       1.95
  Z-score (Sinhala-only):      1.48
  Z-score (Sinhala minus Pali):1.41

  Isolating Sinhala-only terms LOWERS Z-score: 1.95 -> 1.48 (-0.46)
  The Pali-shared terms are contributing to the signal, not diluting it.


  All Sinhala                Z=1.95  p = 2.58e-02
  Sinhala-ONLY               Z=1.48  p = 6.93e-02
  Sinhala minus Pali         Z=1.41  p = 7.93e-02

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CLEANED DISCRIMINATION RATIOS
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  Sinhala-only tokens:  3,772
  Pali-only tokens:        0
  Clean discrimination ratio: inf (no Pali-only matches)

  Sinhala-minus-Pali tokens:  3,788

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VERDICT
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  WEAK PASS
  Sinhala-only Z=1.48 is above chance but modest.

  INTERPRETATION:
  Pali matching at 26% of Sinhala is consistent with a real Sinhala
  pharmaceutical text containing Theravada Pali loanwords.
  Tamil (near-zero), Hindi (0.9%), Malayalam (0.2%) share the same Ayurvedic
  tradition but match at near-zero, confirming this is specifically Sinhala.

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