catni actni ctani tcani atcni tacni canti acnti cnati ncati ancti nacti ctnai tcnai cntai nctai tncai ntcai atnci tanci antci natci tnaci ntaci catin actin ctain tcain atcin tacin caitn acitn ciatn icatn aictn iactn ctian tcian citan ictan tican itcan aticn taicn aitcn iatcn tiacn itacn canit acnit cnait ncait ancit nacit caint acint ciant icant aicnt iacnt cniat nciat cinat icnat nicat incat anict naict ainct ianct niact inact ctnia tcnia cntia nctia tncia ntcia ctina tcina citna ictna ticna itcna cnita ncita cinta icnta nicta incta tnica ntica tinca itnca nitca intca atnic tanic antic natic tnaic ntaic atinc tainc aitnc iatnc tianc itanc anitc naitc aintc iantc niatc inatc tniac ntiac tinac itnac nitac intac
Note: these 'words' (valid or invalid) are all the permutations of the word catni. These words are obtained by scrambling the letters in catni.