ya ada buaya ada buaya
ya ada buaya ada buaya .
j a WORD_BOUNDARY  a d a WORD_BOUNDARY b u a j a WORD_BOUNDARY  a d a WORD_BOUNDARY b u a j a WORD_BOUNDARY
y a WORD_BOUNDARY a d a WORD_BOUNDARY b u a y a WORD_BOUNDARY a d a WORD_BOUNDARY b u a y a WORD_BOUNDARY