piler ipler plier lpier ilper liper pielr ipelr peilr epilr ieplr eiplr pleir lpeir pelir eplir lepir elpir ilepr liepr ielpr eilpr leipr elipr pilre iplre plire lpire ilpre lipre pirle iprle prile rpile irple riple plrie lprie prlie rplie lrpie rlpie ilrpe lirpe irlpe rilpe lripe rlipe pierl iperl peirl epirl ieprl eiprl pirel iprel priel rpiel irpel ripel peril epril preil rpeil erpil repil ierpl eirpl irepl riepl eripl reipl pleri lperi pelri eplri lepri elpri plrei lprei prlei rplei lrpei rlpei perli eprli preli rpeli erpli repli lerpi elrpi lrepi rlepi erlpi relpi ilerp lierp ielrp eilrp leirp elirp ilrep lirep irlep rilep lriep rliep ierlp eirlp irelp rielp erilp reilp lerip elrip lreip rleip erlip relip
Note: these 'words' (valid or invalid) are all the permutations of the word piler. These words are obtained by scrambling the letters in piler.