I did it once
I do it once
pro:sub mod pro:per adv
i did it once .
aɪ WORD_BOUNDARY d ɪ d WORD_BOUNDARY ɪ t WORD_BOUNDARY w ʌ n s WORD_BOUNDARY
i WORD_BOUNDARY d i d WORD_BOUNDARY i t WORD_BOUNDARY o n c e WORD_BOUNDARY