trwy 'r twnel mae 'o 'n mynd
trwy 'r twnel mae 'o 'n mynd ?
t r uɨ WORD_BOUNDARY ɛ r WORD_BOUNDARY t ʊ n ɛ l WORD_BOUNDARY m ɑɨ WORD_BOUNDARY  oː WORD_BOUNDARY ɛ n WORD_BOUNDARY m ø n d WORD_BOUNDARY
t r w y WORD_BOUNDARY ' r WORD_BOUNDARY t w n e l WORD_BOUNDARY m a e WORD_BOUNDARY ' o WORD_BOUNDARY ' n WORD_BOUNDARY m y n d WORD_BOUNDARY