in English is:

mineralogy

Mutations

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

Use

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