goatc ogatc gaotc agotc oagtc aogtc gotac ogtac gtoac tgoac otgac togac gatoc agtoc gtaoc tgaoc atgoc tagoc oatgc aotgc otagc toagc atogc taogc goact ogact gaoct agoct oagct aogct gocat ogcat gcoat cgoat ocgat cogat gacot agcot gcaot cgaot acgot cagot oacgt aocgt ocagt coagt acogt caogt gotca ogtca gtoca tgoca otgca togca gocta ogcta gcota cgota ocgta cogta gtcoa tgcoa gctoa cgtoa tcgoa ctgoa otcga tocga octga cotga tcoga ctoga gatco agtco gtaco tgaco atgco tagco gacto agcto gcato cgato acgto cagto gtcao tgcao gctao cgtao tcgao ctgao atcgo tacgo actgo catgo tcago ctago oatcg aotcg otacg toacg atocg taocg oactg aoctg ocatg coatg acotg caotg otcag tocag octag cotag tcoag ctoag atcog tacog actog catog tcaog ctaog
Note: these 'words' (valid or invalid) are all the permutations of the word goatc. These words are obtained by scrambling the letters in goatc.