hawcu ahwcu hwacu whacu awhcu wahcu hacwu ahcwu hcawu chawu achwu cahwu hwcau whcau hcwau chwau wchau cwhau awchu wachu acwhu cawhu wcahu cwahu hawuc ahwuc hwauc whauc awhuc wahuc hauwc ahuwc huawc uhawc auhwc uahwc hwuac whuac huwac uhwac wuhac uwhac awuhc wauhc auwhc uawhc wuahc uwahc hacuw ahcuw hcauw chauw achuw cahuw haucw ahucw huacw uhacw auhcw uahcw hcuaw chuaw hucaw uhcaw cuhaw uchaw acuhw cauhw auchw uachw cuahw ucahw hwcua whcua hcwua chwua wchua cwhua hwuca whuca huwca uhwca wuhca uwhca hcuwa chuwa hucwa uhcwa cuhwa uchwa wcuha cwuha wucha uwcha cuwha ucwha awcuh wacuh acwuh cawuh wcauh cwauh awuch wauch auwch uawch wuach uwach acuwh cauwh aucwh uacwh cuawh ucawh wcuah cwuah wucah uwcah cuwah ucwah
Note: these 'words' (valid or invalid) are all the permutations of the word hawcu. These words are obtained by scrambling the letters in hawcu.