he did it by accident
he do it by accident
pro:sub mod pro:per prep n
he did it by accident .
h iː WORD_BOUNDARY d ɪ d WORD_BOUNDARY ɪ t WORD_BOUNDARY b aɪ WORD_BOUNDARY æ k s ɪ d ə n t WORD_BOUNDARY
h e WORD_BOUNDARY d i d WORD_BOUNDARY i t WORD_BOUNDARY b y WORD_BOUNDARY a c c i d e n t WORD_BOUNDARY