be careful with that pen
be care with that pen
cop adj prep det:dem n
be careful with that pen.
b iː WORD_BOUNDARY kʰ eə f ə l WORD_BOUNDARY w ɪ ð WORD_BOUNDARY ð æ tʰ WORD_BOUNDARY pʰ e n WORD_BOUNDARY
b e WORD_BOUNDARY c a r e f u l WORD_BOUNDARY w i t h WORD_BOUNDARY t h a t WORD_BOUNDARY p e n . WORD_BOUNDARY