pa_pa_pa_pa_pa_pa
pa_pa_pa_pa_pa_pa
sing
pa pa pa pa pa pa .
p a WORD_BOUNDARY p a WORD_BOUNDARY p a WORD_BOUNDARY p a WORD_BOUNDARY p a WORD_BOUNDARY p a WORD_BOUNDARY
p a WORD_BOUNDARY p a WORD_BOUNDARY p a WORD_BOUNDARY p a WORD_BOUNDARY p a WORD_BOUNDARY p a WORD_BOUNDARY