beton ebton bteon tbeon etbon tebon beotn ebotn boetn obetn eobtn oebtn btoen tboen boten obten toben otben etobn teobn eotbn oetbn toebn otebn betno ebtno bteno tbeno etbno tebno bento ebnto bneto nbeto enbto nebto btneo tbneo bnteo nbteo tnbeo ntbeo etnbo tenbo entbo netbo tnebo ntebo beont ebont boent obent eobnt oebnt benot ebnot bneot nbeot enbot nebot bonet obnet bnoet nboet onbet nobet eonbt oenbt enobt neobt onebt noebt btone tbone botne obtne tobne otbne btnoe tbnoe bntoe nbtoe tnboe ntboe bonte obnte bnote nbote onbte nobte tonbe otnbe tnobe ntobe ontbe notbe etonb teonb eotnb oetnb toenb otenb etnob tenob entob netob tneob nteob eontb oentb enotb neotb onetb noetb toneb otneb tnoeb ntoeb onteb noteb
Note: these 'words' (valid or invalid) are all the permutations of the word beton. These words are obtained by scrambling the letters in beton.