U del primer grado D
u del primer grado d .
u WORD_BOUNDARY ð e l WORD_BOUNDARY p ɾ i m e ɾ WORD_BOUNDARY ɣ ɾ a ð o WORD_BOUNDARY ð e WORD_BOUNDARY
u WORD_BOUNDARY d e l WORD_BOUNDARY p r i m e r WORD_BOUNDARY g r a d o WORD_BOUNDARY d WORD_BOUNDARY