dau ddeg chwech

== Welsh == === Etymology === From dau (“two”) +‎ deg (“ten”) +‎ chwech (“six”). === Pronunciation === (North Wales) IPA(key): /ˌdaɨ̯ðɛɡ ˈχweːχ/ (South Wales) IPA(key): /ˌdai̯ðɛɡ ˈχweːχ/ === Numeral === dau ddeg chwech (cardinal number, decimal) twenty-six Synonym: chwech ar hugain === Mutation ===