Mi primera publicacion Margarita Mancia, Phonetics_and_Phonology_Album | Page 18

 The underlying form is known as the phonemic—sometimes morphophonemic, or
phonological—representation of the word. The phonemes of a language are the
segments that contrast in the underlying forms. American English may be said to have
at least 13 vowel phonemes, which contrast in the underlying forms of words such as
bate, bat, beat, bet, bite, bit, bout, but, boat, dot, bought, balm, and boy. Some
authorities consider that there are additional vowel phonemes exemplified in the
words bush and beaut(y), but others believe that these can be derived from the same
underlying vowel as that in the word bud. Phonemes are traditionally written between
slanting lines, as /P/, /M/, or /L/.