Example
The English plural morpheme for nouns has three allomorphs:
(notation in SAMPA)
from: Iggy Roca and Wyn Johnson, a course in phonology, Blackwell, 1999; p. 621
... Pacific Islander, 4.94% from other races, and 2.91% from two or more races. 19.10% of the population are Hispanic or Latino of any race. There are 1,007 households out of ...