was ein alter Bus
was ein alt Bus
pro adj adj n
was ein alter bus ?
v a s WORD_BOUNDARY  aɪ n WORD_BOUNDARY  a l t ɐ WORD_BOUNDARY b ʊ s WORD_BOUNDARY
w a s WORD_BOUNDARY e i n WORD_BOUNDARY a l t e r WORD_BOUNDARY b u s WORD_BOUNDARY