mercy emrcy mrecy rmecy ermcy remcy mecry emcry mcery cmery ecmry cemry mrcey rmcey mcrey cmrey rcmey crmey ercmy recmy ecrmy cermy rcemy cremy meryc emryc mreyc rmeyc ermyc remyc meyrc emyrc myerc ymerc eymrc yemrc mryec rmyec myrec ymrec rymec yrmec erymc reymc eyrmc yermc ryemc yremc mecyr emcyr mceyr cmeyr ecmyr cemyr meycr emycr myecr ymecr eymcr yemcr mcyer cmyer mycer ymcer cymer ycmer ecymr ceymr eycmr yecmr cyemr ycemr mrcye rmcye mcrye cmrye rcmye crmye mryce rmyce myrce ymrce rymce yrmce mcyre cmyre mycre ymcre cymre ycmre rcyme cryme rycme yrcme cyrme ycrme ercym recym ecrym cerym rceym creym erycm reycm eyrcm yercm ryecm yrecm ecyrm ceyrm eycrm yecrm cyerm ycerm rcyem cryem rycem yrcem cyrem ycrem
Note: these 'words' (valid or invalid) are all the permutations of the word mercy. These words are obtained by scrambling the letters in mercy.