in English is:

formalism

Mutations

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

Use

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