tre e sre e sre
tre e tre e tre
num conj num conj num
tre e sre e sre .
t r e WORD_BOUNDARY e WORD_BOUNDARY z r e WORD_BOUNDARY e WORD_BOUNDARY z r e WORD_BOUNDARY
t r e WORD_BOUNDARY e WORD_BOUNDARY s r e WORD_BOUNDARY e WORD_BOUNDARY s r e WORD_BOUNDARY . WORD_BOUNDARY