o Bu Guru ama Bu Guru
o bu guru ama bu guru .
o WORD_BOUNDARY b u WORD_BOUNDARY ɡ u r u WORD_BOUNDARY a m a WORD_BOUNDARY b u WORD_BOUNDARY ɡ u r u WORD_BOUNDARY
o WORD_BOUNDARY b u WORD_BOUNDARY g u r u WORD_BOUNDARY a m a WORD_BOUNDARY b u WORD_BOUNDARY g u r u WORD_BOUNDARY . WORD_BOUNDARY