couta ocuta cuota ucota oucta uocta cotua octua ctoua tcoua otcua tocua cutoa uctoa ctuoa tcuoa utcoa tucoa outca uotca otuca touca utoca tuoca couat ocuat cuoat ucoat oucat uocat coaut ocaut caout acout oacut aocut cuaot ucaot cauot acuot uacot aucot ouact uoact oauct aouct uaoct auoct cotau octau ctoau tcoau otcau tocau coatu ocatu caotu acotu oactu aoctu ctaou tcaou catou actou tacou atcou otacu toacu oatcu aotcu taocu atocu cutao uctao ctuao tcuao utcao tucao cuato ucato cauto acuto uacto aucto ctauo tcauo catuo actuo tacuo atcuo utaco tuaco uatco autco tauco atuco outac uotac otuac touac utoac tuoac ouatc uoatc oautc aoutc uaotc auotc otauc toauc oatuc aotuc taouc atouc utaoc tuaoc uatoc autoc tauoc atuoc
Note: these 'words' (valid or invalid) are all the permutations of the word couta. These words are obtained by scrambling the letters in couta.