a 'r bysedd i+gyd
a 'r bysedd i gyd .
a WORD_BOUNDARY ɛ r WORD_BOUNDARY b ʌ s ɛ ð WORD_BOUNDARY ɨ WORD_BOUNDARY ɡ ɨː d WORD_BOUNDARY
a WORD_BOUNDARY ' r WORD_BOUNDARY b y s e d d WORD_BOUNDARY i WORD_BOUNDARY g y d WORD_BOUNDARY