lidod ildod ldiod dliod idlod dilod liodd ilodd loidd olidd ioldd oildd ldoid dloid lodid oldid dolid odlid idold diold iodld oidld doild odild liddo ilddo ldido dlido idldo dildo liddo ilddo ldido dlido idldo dildo lddio dldio lddio dldio ddlio ddlio iddlo didlo iddlo didlo ddilo ddilo liodd ilodd loidd olidd ioldd oildd lidod ildod ldiod dliod idlod dilod lodid oldid ldoid dloid odlid dolid iodld oidld idold diold odild doild ldodi dlodi loddi olddi doldi odldi lddoi dldoi lddoi dldoi ddloi ddloi loddi olddi ldodi dlodi odldi doldi dodli oddli ddoli ddoli oddli dodli idodl diodl ioddl oiddl doidl odidl iddol didol iddol didol ddiol ddiol ioddl oiddl idodl diodl odidl doidl dodil oddil ddoil ddoil oddil dodil
Note: these 'words' (valid or invalid) are all the permutations of the word lidod. These words are obtained by scrambling the letters in lidod.