wonder how that happened
wonder how that happened .
w ʌ n d ɚ WORD_BOUNDARY h aʊ WORD_BOUNDARY ð æ t WORD_BOUNDARY h æ p ə n d WORD_BOUNDARY
w o n d e r WORD_BOUNDARY h o w WORD_BOUNDARY t h a t WORD_BOUNDARY h a p p e n e d WORD_BOUNDARY