rolls orlls rlols lrols olrls lorls rolls orlls rlols lrols olrls lorls rllos lrlos rllos lrlos llros llros ollrs lolrs ollrs lolrs llors llors rolsl orlsl rlosl lrosl olrsl lorsl rosll orsll rsoll sroll osrll sorll rlsol lrsol rslol srlol lsrol slrol olsrl losrl oslrl solrl lsorl slorl rolsl orlsl rlosl lrosl olrsl lorsl rosll orsll rsoll sroll osrll sorll rlsol lrsol rslol srlol lsrol slrol olsrl losrl oslrl solrl lsorl slorl rllso lrlso rllso lrlso llrso llrso rlslo lrslo rsllo srllo lsrlo slrlo rlslo lrslo rsllo srllo lsrlo slrlo llsro llsro lslro sllro lslro sllro ollsr lolsr ollsr lolsr llosr llosr olslr loslr osllr sollr lsolr slolr olslr loslr osllr sollr lsolr slolr llsor llsor lslor sllor lslor sllor
Note: these 'words' (valid or invalid) are all the permutations of the word rolls. These words are obtained by scrambling the letters in rolls.