a for 乜嘢 嘢 aa1
a for mat1je5 je5 aa1
n:let L2 wh n sfp
a for 乜嘢 嘢 aa1 ?
 WORD_BOUNDARY  WORD_BOUNDARY m ɐ˥ t̚ j ɛ˨˧ WORD_BOUNDARY j ɛ˨˧ WORD_BOUNDARY a˥ WORD_BOUNDARY
a WORD_BOUNDARY f o r WORD_BOUNDARY 乜 嘢 WORD_BOUNDARY 嘢 WORD_BOUNDARY a a 1 WORD_BOUNDARY ? WORD_BOUNDARY