brool rbool borol obrol robol orbol brool rbool borol obrol robol orbol boorl oborl boorl oborl oobrl oobrl roobl orobl roobl orobl oorbl oorbl brolo rbolo borlo obrlo roblo orblo brloo rbloo blroo lbroo rlboo lrboo bolro oblro bloro lboro olbro lobro rolbo orlbo rlobo lrobo olrbo lorbo brolo rbolo borlo obrlo roblo orblo brloo rbloo blroo lbroo rlboo lrboo bolro oblro bloro lboro olbro lobro rolbo orlbo rlobo lrobo olrbo lorbo boolr obolr boolr obolr ooblr ooblr bolor oblor bloor lboor olbor lobor bolor oblor bloor lboor olbor lobor oolbr oolbr olobr loobr olobr loobr roolb orolb roolb orolb oorlb oorlb rolob orlob rloob lroob olrob lorob rolob orlob rloob lroob olrob lorob oolrb oolrb olorb loorb olorb loorb
Note: these 'words' (valid or invalid) are all the permutations of the word brool. These words are obtained by scrambling the letters in brool.