bwyaa wbyaa bywaa ybwaa wybaa ywbaa bwaya wbaya bawya abwya wabya awbya byawa ybawa baywa abywa yabwa aybwa wyaba ywaba wayba awyba yawba aywba bwyaa wbyaa bywaa ybwaa wybaa ywbaa bwaya wbaya bawya abwya wabya awbya byawa ybawa baywa abywa yabwa aybwa wyaba ywaba wayba awyba yawba aywba bwaay wbaay baway abway wabay awbay bwaay wbaay baway abway wabay awbay baawy abawy baawy abawy aabwy aabwy waaby awaby waaby awaby aawby aawby byaaw ybaaw bayaw abyaw yabaw aybaw byaaw ybaaw bayaw abyaw yabaw aybaw baayw abayw baayw abayw aabyw aabyw yaabw ayabw yaabw ayabw aaybw aaybw wyaab ywaab wayab awyab yawab aywab wyaab ywaab wayab awyab yawab aywab waayb awayb waayb awayb aawyb aawyb yaawb ayawb yaawb ayawb aaywb aaywb
Note: these 'words' (valid or invalid) are all the permutations of the word bwyaa. These words are obtained by scrambling the letters in bwyaa.