slick lsick silck islck lisck ilsck slcik lscik sclik cslik lcsik clsik siclk isclk scilk csilk icslk cislk licsk ilcsk lcisk clisk iclsk cilsk slikc lsikc silkc islkc liskc ilskc slkic lskic sklic kslic lksic klsic siklc isklc skilc ksilc ikslc kislc liksc ilksc lkisc klisc iklsc kilsc slcki lscki sclki cslki lcski clski slkci lskci sklci kslci lksci klsci sckli cskli skcli kscli cksli kcsli lcksi clksi lkcsi klcsi cklsi kclsi sickl isckl scikl csikl icskl ciskl sikcl iskcl skicl ksicl ikscl kiscl sckil cskil skcil kscil cksil kcsil icksl ciksl ikcsl kicsl ckisl kcisl licks ilcks lciks cliks iclks cilks likcs ilkcs lkics klics iklcs kilcs lckis clkis lkcis klcis cklis kclis ickls cikls ikcls kicls ckils kcils
Note: these 'words' (valid or invalid) are all the permutations of the word slick. These words are obtained by scrambling the letters in slick.