B A babi B I babi
b a babi b i babi .
b WORD_BOUNDARY a WORD_BOUNDARY b a b i WORD_BOUNDARY b WORD_BOUNDARY i WORD_BOUNDARY b a b i WORD_BOUNDARY
b WORD_BOUNDARY a WORD_BOUNDARY b a b i WORD_BOUNDARY b WORD_BOUNDARY i WORD_BOUNDARY b a b i WORD_BOUNDARY . WORD_BOUNDARY