robli orbli rboli broli obrli borli rolbi orlbi rlobi lrobi olrbi lorbi rbloi brloi rlboi lrboi blroi lbroi oblri bolri olbri lobri blori lbori robil orbil rboil broil obril boril roibl oribl riobl irobl oirbl iorbl rbiol briol ribol irbol birol ibrol obirl boirl oibrl iobrl biorl iborl rolib orlib rloib lroib olrib lorib roilb orilb riolb irolb oirlb iorlb rliob lriob rilob irlob lirob ilrob olirb loirb oilrb iolrb liorb ilorb rblio brlio rlbio lrbio blrio lbrio rbilo brilo riblo irblo birlo ibrlo rlibo lribo rilbo irlbo lirbo ilrbo bliro lbiro bilro iblro libro ilbro oblir bolir olbir lobir bloir lboir obilr boilr oiblr ioblr biolr ibolr olibr loibr oilbr iolbr liobr ilobr blior lbior bilor iblor libor ilbor
Note: these 'words' (valid or invalid) are all the permutations of the word robli. These words are obtained by scrambling the letters in robli.