yabas aybas ybaas byaas abyas bayas yaabs ayabs yaabs ayabs aaybs aaybs ybaas byaas yabas aybas bayas abyas abays baays aabys aabys baays abays yabsa aybsa ybasa byasa abysa baysa yasba aysba ysaba syaba asyba sayba ybsaa bysaa ysbaa sybaa bsyaa sbyaa absya basya asbya sabya bsaya sbaya yaasb ayasb yaasb ayasb aaysb aaysb yasab aysab ysaab syaab asyab sayab yasab aysab ysaab syaab asyab sayab aasyb aasyb asayb saayb asayb saayb ybasa byasa yabsa aybsa baysa abysa ybsaa bysaa ysbaa sybaa bsyaa sbyaa yasba aysba ysaba syaba asyba sayba basya absya bsaya sbaya asbya sabya abasy baasy aabsy aabsy baasy abasy absay basay asbay sabay bsaay sbaay aasby aasby asaby saaby asaby saaby basay absay bsaay sbaay asbay sabay
Note: these 'words' (valid or invalid) are all the permutations of the word yabas. These words are obtained by scrambling the letters in yabas.