pibal ipbal pbial bpial ibpal bipal piabl ipabl paibl apibl iapbl aipbl pbail bpail pabil apbil bapil abpil ibapl biapl iabpl aibpl baipl abipl pibla ipbla pbila bpila ibpla bipla pilba iplba pliba lpiba ilpba lipba pblia bplia plbia lpbia blpia lbpia iblpa bilpa ilbpa libpa blipa lbipa pialb ipalb pailb apilb iaplb aiplb pilab iplab pliab lpiab ilpab lipab palib aplib plaib lpaib alpib lapib ialpb ailpb ilapb liapb alipb laipb pbali bpali pabli apbli bapli abpli pblai bplai plbai lpbai blpai lbpai palbi aplbi plabi lpabi alpbi lapbi balpi ablpi blapi lbapi albpi labpi ibalp bialp iablp aiblp bailp abilp iblap bilap ilbap libap bliap lbiap ialbp ailbp ilabp liabp alibp laibp balip ablip blaip lbaip albip labip
Note: these 'words' (valid or invalid) are all the permutations of the word pibal. These words are obtained by scrambling the letters in pibal.