teahc etahc taehc atehc eathc aethc tehac ethac theac hteac ehtac hetac tahec athec thaec htaec ahtec hatec eahtc aehtc ehatc heatc ahetc haetc teach etach taech atech eatch aetch tecah etcah tceah cteah ectah cetah taceh atceh tcaeh ctaeh acteh cateh eacth aecth ecath ceath aceth caeth tehca ethca theca hteca ehtca hetca techa etcha tceha cteha ectha cetha thcea htcea tchea cthea hctea chtea ehcta hecta echta cehta hceta cheta tahce athce thace htace ahtce hatce tache atche tcahe ctahe acthe cathe thcae htcae tchae cthae hctae chtae ahcte hacte achte cahte hcate chate eahct aehct ehact heact ahect haect eacht aecht ecaht ceaht aceht caeht ehcat hecat echat cehat hceat cheat ahcet hacet achet cahet hcaet chaet
Note: these 'words' (valid or invalid) are all the permutations of the word teahc. These words are obtained by scrambling the letters in teahc.