wrcab rwcab wcrab cwrab rcwab crwab wracb rwacb warcb awrcb rawcb arwcb wcarb cwarb wacrb awcrb cawrb acwrb rcawb crawb racwb arcwb carwb acrwb wrcba rwcba wcrba cwrba rcwba crwba wrbca rwbca wbrca bwrca rbwca brwca wcbra cwbra wbcra bwcra cbwra bcwra rcbwa crbwa rbcwa brcwa cbrwa bcrwa wrabc rwabc warbc awrbc rawbc arwbc wrbac rwbac wbrac bwrac rbwac brwac wabrc awbrc wbarc bwarc abwrc bawrc rabwc arbwc rbawc brawc abrwc barwc wcabr cwabr wacbr awcbr cawbr acwbr wcbar cwbar wbcar bwcar cbwar bcwar wabcr awbcr wbacr bwacr abwcr bawcr cabwr acbwr cbawr bcawr abcwr bacwr rcabw crabw racbw arcbw carbw acrbw rcbaw crbaw rbcaw brcaw cbraw bcraw rabcw arbcw rbacw bracw abrcw barcw cabrw acbrw cbarw bcarw abcrw bacrw
Note: these 'words' (valid or invalid) are all the permutations of the word wrcab. These words are obtained by scrambling the letters in wrcab.