yerks eyrks yreks ryeks eryks reyks yekrs eykrs ykers kyers ekyrs keyrs yrkes rykes ykres kyres rkyes kryes erkys rekys ekrys kerys rkeys kreys yersk eyrsk yresk ryesk erysk reysk yesrk eysrk yserk syerk esyrk seyrk yrsek rysek ysrek syrek rsyek sryek ersyk resyk esryk seryk rseyk sreyk yeksr eyksr ykesr kyesr ekysr keysr yeskr eyskr ysekr syekr esykr seykr ykser kyser ysker syker ksyer skyer eksyr kesyr eskyr sekyr kseyr skeyr yrkse rykse ykrse kyrse rkyse kryse yrske ryske ysrke syrke rsyke sryke yksre kysre yskre sykre ksyre skyre rksye krsye rskye srkye ksrye skrye erksy reksy ekrsy kersy rkesy kresy ersky resky esrky serky rseky sreky eksry kesry eskry sekry ksery skery rksey krsey rskey srkey ksrey skrey
Note: these 'words' (valid or invalid) are all the permutations of the word yerks. These words are obtained by scrambling the letters in yerks.