in English is:

humification

Mutations

Soft:lufadredd
Nasal:(no mutation)
Aspirate:(no mutation)

Use

y llufadredd hwn
fy llufadredd i
dy lufadredd di
ei lufadredd ef/o
ei llufadredd hi
ein llufadredd ni
eich llufadredd chi
eu llufadredd nhw/hwy
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