in English is:

the black arts

Mutations

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

Use

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