chows hcows cohws ochws hocws ohcws chwos hcwos cwhos wchos hwcos whcos cowhs ocwhs cwohs wcohs owchs wochs howcs ohwcs hwocs whocs owhcs wohcs chosw hcosw cohsw ochsw hocsw ohcsw chsow hcsow cshow schow hscow shcow coshw ocshw csohw scohw oschw sochw hoscw ohscw hsocw shocw oshcw sohcw chwso hcwso cwhso wchso hwcso whcso chswo hcswo cshwo schwo hscwo shcwo cwsho wcsho cswho scwho wscho swcho hwsco whsco hswco shwco wshco swhco cowsh ocwsh cwosh wcosh owcsh wocsh coswh ocswh csowh scowh oscwh socwh cwsoh wcsoh cswoh scwoh wscoh swcoh owsch wosch oswch sowch wsoch swoch howsc ohwsc hwosc whosc owhsc wohsc hoswc ohswc hsowc showc oshwc sohwc hwsoc whsoc hswoc shwoc wshoc swhoc owshc woshc oswhc sowhc wsohc swohc
Note: these 'words' (valid or invalid) are all the permutations of the word chows. These words are obtained by scrambling the letters in chows.