cires icres cries rcies irces rices ciers icers ceirs ecirs iecrs eicrs creis rceis ceris ecris recis ercis irecs riecs iercs eircs reics erics cirse icrse crise rcise ircse ricse cisre icsre csire scire iscre sicre crsie rcsie csrie scrie rscie srcie irsce risce isrce sirce rsice srice ciesr icesr ceisr ecisr iecsr eicsr ciser icser csier scier iscer sicer cesir ecsir cseir sceir escir secir iescr eiscr isecr siecr esicr seicr cresi rcesi cersi ecrsi recsi ercsi crsei rcsei csrei screi rscei srcei cesri ecsri cseri sceri escri secri resci ersci rseci sreci esrci serci iresc riesc iersc eirsc reisc erisc irsec risec isrec sirec rsiec sriec iesrc eisrc iserc sierc esirc seirc resic ersic rseic sreic esric seric
Note: these 'words' (valid or invalid) are all the permutations of the word cires. These words are obtained by scrambling the letters in cires.