a pwy 'dy 'r mwya'
a pwy 'dy 'r mwya' ?
a WORD_BOUNDARY p uɨ WORD_BOUNDARY d ɨː WORD_BOUNDARY ɛ r WORD_BOUNDARY m uɨ a WORD_BOUNDARY
a WORD_BOUNDARY p w y WORD_BOUNDARY ' d y WORD_BOUNDARY ' r WORD_BOUNDARY m w y a ' WORD_BOUNDARY