chaft hcaft cahft achft hacft ahcft chfat hcfat cfhat fchat hfcat fhcat cafht acfht cfaht fcaht afcht facht hafct ahfct hfact fhact afhct fahct chatf hcatf cahtf achtf hactf ahctf chtaf hctaf cthaf tchaf htcaf thcaf cathf acthf ctahf tcahf atchf tachf hatcf ahtcf htacf thacf athcf tahcf chfta hcfta cfhta fchta hfcta fhcta chtfa hctfa cthfa tchfa htcfa thcfa cftha fctha ctfha tcfha ftcha tfcha hftca fhtca htfca thfca fthca tfhca cafth acfth cfath fcath afcth facth catfh actfh ctafh tcafh atcfh tacfh cftah fctah ctfah tcfah ftcah tfcah aftch fatch atfch tafch ftach tfach haftc ahftc hfatc fhatc afhtc fahtc hatfc ahtfc htafc thafc athfc tahfc hftac fhtac htfac thfac fthac tfhac afthc fathc atfhc tafhc ftahc tfahc
Note: these 'words' (valid or invalid) are all the permutations of the word chaft. These words are obtained by scrambling the letters in chaft.