aa1 aa1 aa1 aa1
aa1 aa1 aa1 aa1
sfp sfp sfp sfp
aa1 aa1 aa1 aa1 .
aː ˥ WORD_BOUNDARY aː ˥ WORD_BOUNDARY aː ˥ WORD_BOUNDARY aː ˥ WORD_BOUNDARY
a a 1 WORD_BOUNDARY a a 1 WORD_BOUNDARY a a 1 WORD_BOUNDARY a a 1 WORD_BOUNDARY