in English is:

coal measures

Mutations

Soft:gystradau glo
Nasal:nghystradau glo
Aspirate:chystradau glo

Use

y cystradau glo hyn
fy nghystradau glo i
dy gystradau glo di
ei gystradau glo ef/o
ei chystradau glo hi
ein cystradau glo ni
eich cystradau glo chi
eu cystradau glo nhw/hwy
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