in English is:

organization

,

procedure

Mutations

Soft:drefniadaeth
Nasal:nhrefniadaeth
Aspirate:threfniadaeth

Use

y drefniadaeth hon
fy nhrefniadaeth i
dy drefniadaeth di
ei drefniadaeth ef/o
ei threfniadaeth hi
ein trefniadaeth ni
eich trefniadaeth chi
eu trefniadaeth nhw/hwy
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