brill rbill birll ibrll ribll irbll brlil rblil blril lbril rlbil lrbil bilrl iblrl blirl lbirl ilbrl librl rilbl irlbl rlibl lribl ilrbl lirbl brill rbill birll ibrll ribll irbll brlil rblil blril lbril rlbil lrbil bilrl iblrl blirl lbirl ilbrl librl rilbl irlbl rlibl lribl ilrbl lirbl brlli rblli blrli lbrli rlbli lrbli brlli rblli blrli lbrli rlbli lrbli bllri lblri bllri lblri llbri llbri rllbi lrlbi rllbi lrlbi llrbi llrbi billr ibllr blilr lbilr ilblr liblr billr ibllr blilr lbilr ilblr liblr bllir lblir bllir lblir llbir llbir illbr lilbr illbr lilbr llibr llibr rillb irllb rlilb lrilb ilrlb lirlb rillb irllb rlilb lrilb ilrlb lirlb rllib lrlib rllib lrlib llrib llrib illrb lilrb illrb lilrb llirb llirb
Note: these 'words' (valid or invalid) are all the permutations of the word brill. These words are obtained by scrambling the letters in brill.