Q: What exceptional words turn into other words by movement of letters?

A

longest word allowing exchange of letters (metallege)

CONSERVATIONAL, CONVERSATIONAL

longest head-to-tail shift

SPECULATION, PECULATIONS

longest double head-to-tail shift

STABLE-TABLES-ABLEST

longest complete cyclic transposal ATE-TEA-EAT (3)

**** Unless noted otherwise, all words occur in Webster's Third New International Dictionary, Merriam-Webster, Springfield, MA, 1961.

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