7g CC - 6g CC - 5g CC 590au CC 580au CC 570au CC 560au CC 550au CC 540au CC 530au CC 520au CC 510au CC 500au CC
Dechreuodd y 6g CC ar 1 Ionawr yn y flwyddyn 600 CC a daeth i ben ar 31 Rhagfyr yn y flwyddyn 501 CC.
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