yikes iykes ykies kyies ikyes kiyes yieks iyeks yeiks eyiks ieyks eiyks ykeis kyeis yekis eykis keyis ekyis ikeys kieys iekys eikys keiys ekiys yikse iykse ykise kyise ikyse kiyse yiske iyske ysike syike isyke siyke yksie kysie yskie sykie ksyie skyie iksye kisye iskye sikye ksiye skiye yiesk iyesk yeisk eyisk ieysk eiysk yisek iysek ysiek syiek isyek siyek yesik eysik yseik syeik esyik seyik iesyk eisyk iseyk sieyk esiyk seiyk ykesi kyesi yeksi eyksi keysi ekysi yksei kysei yskei sykei ksyei skyei yeski eyski yseki syeki esyki seyki kesyi eksyi kseyi skeyi eskyi sekyi ikesy kiesy ieksy eiksy keisy ekisy iksey kisey iskey sikey ksiey skiey iesky eisky iseky sieky esiky seiky kesiy eksiy kseiy skeiy eskiy sekiy
Note: these 'words' (valid or invalid) are all the permutations of the word yikes. These words are obtained by scrambling the letters in yikes.