in English is:

culm

Mutations

Soft:gwlwm
Nasal:nghwlwm
Aspirate:chwlwm

Use

y cwlwm hwn
fy nghwlwm i
dy gwlwm di
ei gwlwm ef/o
ei chwlwm hi
ein cwlwm ni
eich cwlwm chi
eu cwlwm nhw/hwy
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