in English is:

stuffing

Mutations

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

Use

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