in English is:

freepost

Mutations

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

Use

y rhadbost hwn
fy rhadbost i
dy radbost di
ei radbost ef/o
ei rhadbost hi
ein rhadbost ni
eich rhadbost chi
eu rhadbost nhw/hwy
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