rnlo nrlo rlno lrno nlro lnro rnol nrol ronl ornl norl onrl rlon lron roln orln lorn olrn nlor lnor nolr onlr lonr olnr
Note: these 'words' (valid or invalid) are all the permutations of the word rnlo. These words are obtained by scrambling the letters in rnlo.