clows lcows colws oclws locws olcws clwos lcwos cwlos wclos lwcos wlcos cowls ocwls cwols wcols owcls wocls lowcs olwcs lwocs wlocs owlcs wolcs closw lcosw colsw oclsw locsw olcsw clsow lcsow cslow sclow lscow slcow coslw ocslw csolw scolw osclw soclw loscw olscw lsocw slocw oslcw solcw clwso lcwso cwlso wclso lwcso wlcso clswo lcswo cslwo sclwo lscwo slcwo cwslo wcslo cswlo scwlo wsclo swclo lwsco wlsco lswco slwco wslco swlco cowsl ocwsl cwosl wcosl owcsl wocsl coswl ocswl csowl scowl oscwl socwl cwsol wcsol cswol scwol wscol swcol owscl woscl oswcl sowcl wsocl swocl lowsc olwsc lwosc wlosc owlsc wolsc loswc olswc lsowc slowc oslwc solwc lwsoc wlsoc lswoc slwoc wsloc swloc owslc woslc oswlc sowlc wsolc swolc
Note: these 'words' (valid or invalid) are all the permutations of the word clows. These words are obtained by scrambling the letters in clows.