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
... -72.211262)1. According to the United States Census Bureau, the town has a total area of 41.7 km² (16.1 mi²). 37.6 km² (14.5 mi²) of it is land and ...