mauby amuby muaby umaby aumby uamby mabuy ambuy mbauy bmauy abmuy bamuy mubay umbay mbuay bmuay ubmay bumay aubmy uabmy abumy baumy ubamy buamy mauyb amuyb muayb umayb aumyb uamyb mayub amyub myaub ymaub aymub yamub muyab umyab myuab ymuab uymab yumab auymb uaymb ayumb yaumb uyamb yuamb mabyu ambyu mbayu bmayu abmyu bamyu maybu amybu myabu ymabu aymbu yambu mbyau bmyau mybau ymbau bymau ybmau abymu baymu aybmu yabmu byamu ybamu mubya umbya mbuya bmuya ubmya bumya muyba umyba myuba ymuba uymba yumba mbyua bmyua mybua ymbua bymua ybmua ubyma buyma uybma yubma byuma ybuma aubym uabym abuym bauym ubaym buaym auybm uaybm ayubm yaubm uyabm yuabm abyum bayum aybum yabum byaum ybaum ubyam buyam uybam yubam byuam ybuam
Note: these 'words' (valid or invalid) are all the permutations of the word mauby. These words are obtained by scrambling the letters in mauby.