Run · Voynich Manuscript

T39 confirmation: best period-cipher settings re-scored on held-out herbal pages (fresh seeds)

All settings in the confirmed sets write signs inside words as a continuous stream re-spaced after word-final glyphs, with sticky homophone choice. The remaining misses say the manuscript's words are more rigidly built inside than any setting reproduces. Herbal B's held-out pages are fewer (2,014 words), which widens the simulated spread and makes passing easier there.

Closest fit in the programme, still not a fit: the remaining misses in Herbal B are glyph predictability (h2, z -5.7), one-off words (hapax, -5.0), the edge dependency (+3.8), held-out bigram gain (-3.0) and glyph context gain (+2.2); in Herbal A also word length, TTR, form-function coupling and the line-initial measuresHerbal B best: 3 / 12 held-out, 9 / 30 all (stream spacing, no nomenclator, abbreviation, vowels dropped, simplified spelling, 3 homophones per vowel and 2 per consonant kept 95 % of the time, 15 % copied nulls, line layer 0.5). Herbal A best: 5 / 12, 15 / 30 (stream spacing, 50-word nomenclator, 1 homophone per vowel and 4 per consonant kept 90 %, simplified spelling, 30 % copied nulls, line layer 0.5)0

Result

Run	Measured	Result	Against	Decision	Date
Run	Held-out statistics missed (\|z\| > 2, of 12), and of all 30 including fit and word-body statistics, on held-out pages	Herbal B best: 3 / 12 held-out, 9 / 30 all (stream spacing, no nomenclator, abbreviation, vowels dropped, simplified spelling, 3 homophones per vowel and 2 per consonant kept 95 % of the time, 15 % copied nulls, line layer 0.5). Herbal A best: 5 / 12, 15 / 30 (stream spacing, 50-word nomenclator, 1 homophone per vowel and 4 per consonant kept 90 %, simplified spelling, 30 % copied nulls, line layer 0.5)	Naibbe family in the same sections (T38, fresh seeds): 5-10 / 12 · published Naibbe 9-12 / 12 · plain Latin 9-12 / 12	Closest fit in the programme, still not a fit: the remaining misses in Herbal B are glyph predictability (h2, z -5.7), one-off words (hapax, -5.0), the edge dependency (+3.8), held-out bigram gain (-3.0) and glyph context gain (+2.2); in Herbal A also word length, TTR, form-function coupling and the line-initial measures

What it used and found

Fifteenth-century cipher practices as one fitted family, per section

Method

MTH

Latin genre texts

Dataset

DAT

ZL3b transcription

Dataset

DAT

Latin as a re-spaced homophonic stream (period practices)

Answer it tests

ANS

Parameters

rounds = 1 (2,000 prior), 1b (1,400 prior with positional forms), 2 (1,200 perturbed from the best 5 %), confirmed = 4 best distinct settings per section, 10 seeds (5000-5009) on training and on held-out pages, full statistic set, draws_total = 4600

Cite it

Mysteries Department. (2026). T39 confirmation: best period-cipher settings re-scored on held-out herbal pages (fresh seeds) [Run RUN0DCBFDY3RWC2]. https://mysteriesdept.com/r/RUN0DCBFDY3RWC2

@misc{mysteriesdept_run0dcbfdy3rwc2,
  title     = {T39 confirmation: best period-cipher settings re-scored on held-out herbal pages (fresh seeds)},
  author    = {{Mysteries Department}},
  year      = {2026},
  note      = {Run, catalog key RUN0DCBFDY3RWC2},
  url       = {https://mysteriesdept.com/r/RUN0DCBFDY3RWC2}
}