obanc boanc oabnc aobnc baonc abonc obnac bonac onbac nobac bnoac nboac oanbc aonbc onabc noabc anobc naobc banoc abnoc bnaoc nbaoc anboc naboc obacn boacn oabcn aobcn baocn abocn obcan bocan ocban coban bcoan cboan oacbn aocbn ocabn coabn acobn caobn bacon abcon bcaon cbaon acbon cabon obnca bonca onbca nobca bnoca nboca obcna bocna ocbna cobna bcona cbona oncba nocba ocnba conba ncoba cnoba bncoa nbcoa bcnoa cbnoa ncboa cnboa oancb aoncb onacb noacb anocb naocb oacnb aocnb ocanb coanb aconb caonb oncab nocab ocnab conab ncoab cnoab ancob nacob acnob canob ncaob cnaob banco abnco bnaco nbaco anbco nabco bacno abcno bcano cbano acbno cabno bncao nbcao bcnao cbnao ncbao cnbao ancbo nacbo acnbo canbo ncabo cnabo
Note: these 'words' (valid or invalid) are all the permutations of the word obanc. These words are obtained by scrambling the letters in obanc.