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Mae Geiriadur Prifysgol Cymru ar gael ar lein nawr: http://geiriadur.ac.uk/gpc/gpc.html On 2014 Meh 29, at 6:06 PM, Ieuan Bryn wrote: > Crap da ar... > > Ieuan > > > Ar 29 Mehefin 2014 am 17:13, Gareth Jones <[log in to unmask]> ysgrifennodd: > Beth sy'n gywir - crap da o rywbeth ynteu crap da ar rywbeth? > Sent from my BlackBerry® wireless device >