blurb lburb bulrb ublrb lubrb ulbrb blrub lbrub brlub rblub lrbub rlbub burlb ubrlb brulb rbulb urblb rublb lurbb ulrbb lrubb rlubb urlbb rulbb blubr lbubr bulbr ublbr lubbr ulbbr blbur lbbur bblur bblur lbbur blbur bublr ubblr bbulr bbulr ubblr bublr lubbr ulbbr lbubr blubr ublbr bulbr blrbu lbrbu brlbu rblbu lrbbu rlbbu blbru lbbru bblru bblru lbbru blbru brblu rbblu bbrlu bbrlu rbblu brblu lrbbu rlbbu lbrbu blrbu rblbu brlbu burbl ubrbl brubl rbubl urbbl rubbl bubrl ubbrl bburl bburl ubbrl bubrl brbul rbbul bbrul bbrul rbbul brbul urbbl rubbl ubrbl burbl rbubl brubl lurbb ulrbb lrubb rlubb urlbb rulbb lubrb ulbrb lburb blurb ublrb bulrb lrbub rlbub lbrub blrub rblub brlub urblb rublb ubrlb burlb rbulb brulb
Note: these 'words' (valid or invalid) are all the permutations of the word blurb. These words are obtained by scrambling the letters in blurb.