tooab otoab tooab otoab ootab ootab toaob otaob taoob atoob oatob aotob toaob otaob taoob atoob oatob aotob ooatb ooatb oaotb aootb oaotb aootb tooba otoba tooba otoba ootba ootba toboa otboa tbooa btooa obtoa botoa toboa otboa tbooa btooa obtoa botoa oobta oobta obota boota obota boota toabo otabo taobo atobo oatbo aotbo tobao otbao tboao btoao obtao botao taboo atboo tbaoo btaoo abtoo batoo oabto aobto obato boato aboto baoto toabo otabo taobo atobo oatbo aotbo tobao otbao tboao btoao obtao botao taboo atboo tbaoo btaoo abtoo batoo oabto aobto obato boato aboto baoto ooabt ooabt oaobt aoobt oaobt aoobt oobat oobat oboat booat oboat booat oabot aobot obaot boaot aboot baoot oabot aobot obaot boaot aboot baoot
Note: these 'words' (valid or invalid) are all the permutations of the word tooab. These words are obtained by scrambling the letters in tooab.