colls oclls clols lcols olcls locls colls oclls clols lcols olcls locls cllos lclos cllos lclos llcos llcos ollcs lolcs ollcs lolcs llocs llocs colsl oclsl closl lcosl olcsl locsl cosll ocsll csoll scoll oscll socll clsol lcsol cslol sclol lscol slcol olscl loscl oslcl solcl lsocl slocl colsl oclsl closl lcosl olcsl locsl cosll ocsll csoll scoll oscll socll clsol lcsol cslol sclol lscol slcol olscl loscl oslcl solcl lsocl slocl cllso lclso cllso lclso llcso llcso clslo lcslo csllo scllo lsclo slclo clslo lcslo csllo scllo lsclo slclo llsco llsco lslco sllco lslco sllco ollsc lolsc ollsc lolsc llosc llosc olslc loslc osllc sollc lsolc slolc olslc loslc osllc sollc lsolc slolc llsoc llsoc lsloc slloc lsloc slloc
Note: these 'words' (valid or invalid) are all the permutations of the word colls. These words are obtained by scrambling the letters in colls.