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in {\i <PROTECTED>}, the {\i cadair} element is part of a compound noun and the phonological development – {\i cader} occurred centuries ago.
yn {\i <PROTECTED>}, mae’r elfen {\i cadair} yn rhan o enw cyfansawdd a’r datblygiad ffonolegol {\i -cader} wedi digwydd ers canrifoedd.