wesll ewsll wsell swell eswll sewll welsl ewlsl wlesl lwesl elwsl lewsl wslel swlel wlsel lwsel slwel lswel eslwl selwl elswl leswl slewl lsewl wesll ewsll wsell swell eswll sewll welsl ewlsl wlesl lwesl elwsl lewsl wslel swlel wlsel lwsel slwel lswel eslwl selwl elswl leswl slewl lsewl wells ewlls wlels lwels elwls lewls wells ewlls wlels lwels elwls lewls wlles lwles wlles lwles llwes llwes ellws lelws ellws lelws llews llews wslle swlle wlsle lwsle slwle lswle wslle swlle wlsle lwsle slwle lswle wllse lwlse wllse lwlse llwse llwse sllwe lslwe sllwe lslwe llswe llswe esllw sellw elslw leslw slelw lselw esllw sellw elslw leslw slelw lselw ellsw lelsw ellsw lelsw llesw llesw sllew lslew sllew lslew llsew llsew
Note: these 'words' (valid or invalid) are all the permutations of the word wesll. These words are obtained by scrambling the letters in wesll.