in English is:

gradation

Mutations

Soft:raddoliad
Nasal:ngraddoliad
Aspirate:(no mutation)

Use

y graddoliad hwn
fy ngraddoliad i
dy raddoliad di
ei raddoliad ef/o
ei graddoliad hi
ein graddoliad ni
eich graddoliad chi
eu graddoliad nhw/hwy
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