fire engines have sirens
fire engine have siren
n n v n
fire engines have sirens.
f aɪ ə ɹ ɹ WORD_BOUNDARY ɛ n d̠ʒ ɪ n z WORD_BOUNDARY h æ v WORD_BOUNDARY s aɪ ɹ ə n z WORD_BOUNDARY
f i r e WORD_BOUNDARY e n g i n e s WORD_BOUNDARY h a v e WORD_BOUNDARY s i r e n s . WORD_BOUNDARY