chufa hcufa cuhfa uchfa hucfa uhcfa chfua hcfua cfhua fchua hfcua fhcua cufha ucfha cfuha fcuha ufcha fucha hufca uhfca hfuca fhuca ufhca fuhca chuaf hcuaf cuhaf uchaf hucaf uhcaf chauf hcauf cahuf achuf hacuf ahcuf cuahf ucahf cauhf acuhf uachf auchf huacf uhacf haucf ahucf uahcf auhcf chfau hcfau cfhau fchau hfcau fhcau chafu hcafu cahfu achfu hacfu ahcfu cfahu fcahu cafhu acfhu fachu afchu hfacu fhacu hafcu ahfcu fahcu afhcu cufah ucfah cfuah fcuah ufcah fucah cuafh ucafh caufh acufh uacfh aucfh cfauh fcauh cafuh acfuh facuh afcuh ufach fuach uafch aufch fauch afuch hufac uhfac hfuac fhuac ufhac fuhac huafc uhafc haufc ahufc uahfc auhfc hfauc fhauc hafuc ahfuc fahuc afhuc ufahc fuahc uafhc aufhc fauhc afuhc
Note: these 'words' (valid or invalid) are all the permutations of the word chufa. These words are obtained by scrambling the letters in chufa.