in English is:

manuring

Mutations

Soft:wrteithiad
Nasal:ngwrteithiad
Aspirate:(no mutation)

Use

y gwrteithiad hwn
fy ngwrteithiad i
dy wrteithiad di
ei wrteithiad ef/o
ei gwrteithiad hi
ein gwrteithiad ni
eich gwrteithiad chi
eu gwrteithiad nhw/hwy
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