I see they disappeared
I see they appear
pro:sub v pro:sub part
i see they disappeared .
aɪ WORD_BOUNDARY s iː WORD_BOUNDARY ð eɪ WORD_BOUNDARY d ɪ s ɐ p ɪ ɹ d WORD_BOUNDARY
i WORD_BOUNDARY s e e WORD_BOUNDARY t h e y WORD_BOUNDARY d i s a p p e a r e d WORD_BOUNDARY