tu as vu des bus
taire avoir vu de bus
part v:aux prep prep n
tu as vu des bus ?
t y WORD_BOUNDARY a WORD_BOUNDARY v y WORD_BOUNDARY d e WORD_BOUNDARY b y s WORD_BOUNDARY
t u WORD_BOUNDARY a s WORD_BOUNDARY v u WORD_BOUNDARY d e s WORD_BOUNDARY b u s WORD_BOUNDARY