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