in English is:

red shift

Mutations

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

Use

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