in English is:

beryllium

Mutations

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

Use

y beryliwm hwn
fy meryliwm i
dy feryliwm di
ei feryliwm ef/o
ei beryliwm hi
ein beryliwm ni
eich beryliwm chi
eu beryliwm nhw/hwy
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