in English is:

documentation

Mutations

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

Use

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