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
... of 485.1/km² (1,260.4/mi²). The racial makeup of the town is 95.82% White, 0.50% African American, 0.04% Native American, 1.49% Asian, 0.00% Pacific Islander, ...