in English is:

occasionalism

Mutations

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

Use

yr achlysuraeth hon
fy achlysuraeth i
dy achlysuraeth di
ei achlysuraeth ef/o
ei hachlysuraeth hi
ein hachlysuraeth ni
eich achlysuraeth chi
eu hachlysuraeth nhw/hwy
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