it's happened a_lot_of times
it happen a_lot_of time
pro:per part qn v
it's happened a lot of times .
ɪ t s WORD_BOUNDARY h æ p ə n d WORD_BOUNDARY ɐ WORD_BOUNDARY l ɑː t WORD_BOUNDARY ʌ v WORD_BOUNDARY t aɪ m z WORD_BOUNDARY
i t ' s WORD_BOUNDARY h a p p e n e d WORD_BOUNDARY a WORD_BOUNDARY l o t WORD_BOUNDARY o f WORD_BOUNDARY t i m e s WORD_BOUNDARY