cohos ochos choos hcoos ohcos hocos coohs ocohs coohs ocohs oochs oochs choos hcoos cohos ochos hocos ohcos ohocs hoocs oohcs oohcs hoocs ohocs cohso ochso choso hcoso ohcso hocso cosho ocsho csoho scoho oscho socho chsoo hcsoo cshoo schoo hscoo shcoo ohsco hosco oshco sohco hsoco shoco coosh ocosh coosh ocosh oocsh oocsh cosoh ocsoh csooh scooh oscoh socoh cosoh ocsoh csooh scooh oscoh socoh oosch oosch osoch sooch osoch sooch choso hcoso cohso ochso hocso ohcso chsoo hcsoo cshoo schoo hscoo shcoo cosho ocsho csoho scoho oscho socho hosco ohsco hsoco shoco oshco sohco ohosc hoosc oohsc oohsc hoosc ohosc ohsoc hosoc oshoc sohoc hsooc shooc ooshc ooshc osohc soohc osohc soohc hosoc ohsoc hsooc shooc oshoc sohoc
Note: these 'words' (valid or invalid) are all the permutations of the word cohos. These words are obtained by scrambling the letters in cohos.