walds awlds wlads lwads alwds lawds wadls awdls wdals dwals adwls dawls wldas lwdas wdlas dwlas ldwas dlwas aldws ladws adlws dalws ldaws dlaws walsd awlsd wlasd lwasd alwsd lawsd wasld awsld wsald swald aswld sawld wlsad lwsad wslad swlad lswad slwad alswd laswd aslwd salwd lsawd slawd wadsl awdsl wdasl dwasl adwsl dawsl wasdl awsdl wsadl swadl aswdl sawdl wdsal dwsal wsdal swdal dswal sdwal adswl daswl asdwl sadwl dsawl sdawl wldsa lwdsa wdlsa dwlsa ldwsa dlwsa wlsda lwsda wslda swlda lswda slwda wdsla dwsla wsdla swdla dswla sdwla ldswa dlswa lsdwa sldwa dslwa sdlwa aldsw ladsw adlsw dalsw ldasw dlasw alsdw lasdw asldw saldw lsadw sladw adslw daslw asdlw sadlw dsalw sdalw ldsaw dlsaw lsdaw sldaw dslaw sdlaw
Note: these 'words' (valid or invalid) are all the permutations of the word walds. These words are obtained by scrambling the letters in walds.