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Ydi, mae'n ferf gyflawn ac anghyflawn felly.

----- Original Message ----- 
From: "Sian Roberts" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, July 11, 2008 2:28 PM
Subject: Re: to concentrate minds


Yn ôl, GPC, mae "canolbwyntio" yn "bg.a". Ydi hynny'n helpu?