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6 January 2026

diffhist m Multiplication 04:43 +1 SomeRailfan talk contribs (Fix punctuation)

5 January 2026

diffhist Context-free grammar 17:36 +48 Ambiguousss talk contribs (fixed the proof (previous didn't work because $b \in L(T)$ and $b \in L(S)$). Also a_i are letters so we shouldn't reverse it.)