fitch iftch ftich tfich itfch tifch ficth ifcth fcith cfith icfth cifth ftcih tfcih fctih cftih tcfih ctfih itcfh ticfh ictfh citfh tcifh ctifh fithc ifthc ftihc tfihc itfhc tifhc fihtc ifhtc fhitc hfitc ihftc hiftc fthic tfhic fhtic hftic thfic htfic ithfc tihfc ihtfc hitfc thifc htifc ficht ifcht fciht cfiht icfht cifht fihct ifhct fhict hfict ihfct hifct fchit cfhit fhcit hfcit chfit hcfit ichft cihft ihcft hicft chift hcift ftchi tfchi fcthi cfthi tcfhi ctfhi fthci tfhci fhtci hftci thfci htfci fchti cfhti fhcti hfcti chfti hcfti tchfi cthfi thcfi htcfi chtfi hctfi itchf tichf icthf cithf tcihf ctihf ithcf tihcf ihtcf hitcf thicf hticf ichtf cihtf ihctf hictf chitf hcitf tchif cthif thcif htcif chtif hctif
Note: these 'words' (valid or invalid) are all the permutations of the word fitch. These words are obtained by scrambling the letters in fitch.