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dylent ystyried , yn fanwl , fformat adroddiadau pellach yn ôl maint , dosbarthiad a hynodrwydd yr arddull
they should consider , in depth , the format of further reports according to size , distribution and distinctiveness of style
efallai mai merthyr sydd â'r hynodrwydd o fod â'r cyfraddau uchaf o'r problemau hynny , ond mae'r problemau hynny'n gyffredin ledled y cymoedd
merthyr may have the distinction of having the highest rates of those problems , but those problems are common across the valleys