siwgwr ar+ben y pen
siwgwr ar ben y pen ?
ʃ uː ɡ w r WORD_BOUNDARY  a r WORD_BOUNDARY b ɛ n WORD_BOUNDARY ə WORD_BOUNDARY p ɛ n WORD_BOUNDARY
s i w g w r WORD_BOUNDARY a r WORD_BOUNDARY b e n WORD_BOUNDARY y WORD_BOUNDARY p e n WORD_BOUNDARY