backup abckup bcakup cbakup acbkup cabkup bakcup abkcup bkacup kbacup akbcup kabcup bckaup cbkaup bkcaup kbcaup ckbaup kcbaup ackbup cakbup akcbup kacbup ckabup kcabup bacukp abcukp bcaukp cbaukp acbukp cabukp bauckp abuckp buackp ubackp aubckp uabckp bcuakp cbuakp bucakp ubcakp cubakp ucbakp acubkp caubkp aucbkp uacbkp cuabkp ucabkp bakucp abkucp bkaucp kbaucp akbucp kabucp baukcp abukcp buakcp ubakcp aubkcp uabkcp bkuacp kbuacp bukacp ubkacp kubacp ukbacp akubcp kaubcp aukbcp uakbcp kuabcp ukabcp bckuap cbkuap bkcuap kbcuap ckbuap kcbuap bcukap cbukap buckap ubckap cubkap ucbkap bkucap kbucap bukcap ubkcap kubcap ukbcap ckubap kcubap cukbap uckbap kucbap ukcbap ackubp cakubp akcubp kacubp ckaubp kcaubp acukbp caukbp auckbp uackbp cuakbp ucakbp akucbp kaucbp aukcbp uakcbp kuacbp ukacbp ckuabp kcuabp cukabp uckabp kucabp ukcabp backpu abckpu bcakpu cbakpu acbkpu cabkpu bakcpu abkcpu bkacpu kbacpu akbcpu kabcpu bckapu cbkapu bkcapu kbcapu ckbapu kcbapu ackbpu cakbpu akcbpu kacbpu ckabpu kcabpu bacpku abcpku bcapku cbapku acbpku cabpku bapcku abpcku bpacku pbacku apbcku pabcku bcpaku cbpaku bpcaku pbcaku cpbaku pcbaku acpbku capbku apcbku pacbku cpabku pcabku bakpcu abkpcu bkapcu kbapcu akbpcu kabpcu bapkcu abpkcu bpakcu pbakcu apbkcu pabkcu bkpacu kbpacu bpkacu pbkacu kpbacu pkbacu akpbcu kapbcu apkbcu pakbcu kpabcu pkabcu bckpau cbkpau bkcpau kbcpau ckbpau kcbpau bcpkau cbpkau bpckau pbckau cpbkau pcbkau bkpcau kbpcau bpkcau pbkcau kpbcau pkbcau ckpbau kcpbau cpkbau pckbau kpcbau pkcbau ackpbu cakpbu akcpbu kacpbu ckapbu kcapbu acpkbu capkbu apckbu packbu cpakbu pcakbu akpcbu kapcbu apkcbu pakcbu kpacbu pkacbu ckpabu kcpabu cpkabu pckabu kpcabu pkcabu bacupk abcupk bcaupk cbaupk acbupk cabupk baucpk abucpk buacpk ubacpk aubcpk uabcpk bcuapk cbuapk bucapk ubcapk cubapk ucbapk acubpk caubpk aucbpk uacbpk cuabpk ucabpk bacpuk abcpuk bcapuk cbapuk acbpuk cabpuk bapcuk abpcuk bpacuk pbacuk apbcuk pabcuk bcpauk cbpauk bpcauk pbcauk cpbauk pcbauk acpbuk capbuk apcbuk pacbuk cpabuk pcabuk baupck abupck buapck ubapck aubpck uabpck bapuck abpuck bpauck pbauck apbuck pabuck bupack ubpack bpuack pbuack upback puback aupbck uapbck apubck paubck upabck puabck bcupak cbupak bucpak ubcpak cubpak ucbpak bcpuak cbpuak bpcuak pbcuak cpbuak pcbuak bupcak ubpcak bpucak pbucak upbcak pubcak cupbak ucpbak cpubak pcubak upcbak pucbak acupbk caupbk aucpbk uacpbk cuapbk ucapbk acpubk capubk apcubk pacubk cpaubk pcaubk aupcbk uapcbk apucbk paucbk upacbk puacbk cupabk ucpabk cpuabk pcuabk upcabk pucabk bakupc abkupc bkaupc kbaupc akbupc kabupc baukpc abukpc buakpc ubakpc aubkpc uabkpc bkuapc kbuapc bukapc ubkapc kubapc ukbapc akubpc kaubpc aukbpc uakbpc kuabpc ukabpc bakpuc abkpuc bkapuc kbapuc akbpuc kabpuc bapkuc abpkuc bpakuc pbakuc apbkuc pabkuc bkpauc kbpauc bpkauc pbkauc kpbauc pkbauc akpbuc kapbuc apkbuc pakbuc kpabuc pkabuc baupkc abupkc buapkc ubapkc aubpkc uabpkc bapukc abpukc bpaukc pbaukc apbukc pabukc bupakc ubpakc bpuakc pbuakc upbakc pubakc aupbkc uapbkc apubkc paubkc upabkc puabkc bkupac kbupac bukpac ubkpac kubpac ukbpac bkpuac kbpuac bpkuac pbkuac kpbuac pkbuac bupkac ubpkac bpukac pbukac upbkac pubkac kupbac ukpbac kpubac pkubac upkbac pukbac akupbc kaupbc aukpbc uakpbc kuapbc ukapbc akpubc kapubc apkubc pakubc kpaubc pkaubc aupkbc uapkbc apukbc paukbc upakbc puakbc kupabc ukpabc kpuabc pkuabc upkabc pukabc bckupa cbkupa bkcupa kbcupa ckbupa kcbupa bcukpa cbukpa buckpa ubckpa cubkpa ucbkpa bkucpa kbucpa bukcpa ubkcpa kubcpa ukbcpa ckubpa kcubpa cukbpa uckbpa kucbpa ukcbpa bckpua cbkpua bkcpua kbcpua ckbpua kcbpua bcpkua cbpkua bpckua pbckua cpbkua pcbkua bkpcua kbpcua bpkcua pbkcua kpbcua pkbcua ckpbua kcpbua cpkbua pckbua kpcbua pkcbua bcupka cbupka bucpka ubcpka cubpka ucbpka bcpuka cbpuka bpcuka pbcuka cpbuka pcbuka bupcka ubpcka bpucka pbucka upbcka pubcka cupbka ucpbka cpubka pcubka upcbka pucbka bkupca kbupca bukpca ubkpca kubpca ukbpca bkpuca kbpuca bpkuca pbkuca kpbuca pkbuca bupkca ubpkca bpukca pbukca upbkca pubkca kupbca ukpbca kpubca pkubca upkbca pukbca ckupba kcupba cukpba uckpba kucpba ukcpba ckpuba kcpuba cpkuba pckuba kpcuba pkcuba cupkba ucpkba cpukba pcukba upckba puckba kupcba ukpcba kpucba pkucba upkcba pukcba ackupb cakupb akcupb kacupb ckaupb kcaupb acukpb caukpb auckpb uackpb cuakpb ucakpb akucpb kaucpb aukcpb uakcpb kuacpb ukacpb ckuapb kcuapb cukapb uckapb kucapb ukcapb ackpub cakpub akcpub kacpub ckapub kcapub acpkub capkub apckub packub cpakub pcakub akpcub kapcub apkcub pakcub kpacub pkacub ckpaub kcpaub cpkaub pckaub kpcaub pkcaub acupkb caupkb aucpkb uacpkb cuapkb ucapkb acpukb capukb apcukb pacukb cpaukb pcaukb aupckb uapckb apuckb pauckb upackb puackb cupakb ucpakb cpuakb pcuakb upcakb pucakb akupcb kaupcb aukpcb uakpcb kuapcb ukapcb akpucb kapucb apkucb pakucb kpaucb pkaucb aupkcb uapkcb apukcb paukcb upakcb puakcb kupacb ukpacb kpuacb pkuacb upkacb pukacb ckupab kcupab cukpab uckpab kucpab ukcpab ckpuab kcpuab cpkuab pckuab kpcuab pkcuab cupkab ucpkab cpukab pcukab upckab puckab kupcab ukpcab kpucab pkucab upkcab pukcab
Note: these 'words' (valid or invalid) are all the permutations of the word backup. These words are obtained by scrambling the letters in backup.