bulbs ublbs blubs lbubs ulbbs lubbs bubls ubbls bbuls bbuls ubbls bubls blbus lbbus bblus bblus lbbus blbus ulbbs lubbs ublbs bulbs lbubs blubs bulsb ublsb blusb lbusb ulbsb lubsb buslb ubslb bsulb sbulb usblb sublb blsub lbsub bslub sblub lsbub slbub ulsbb lusbb uslbb sulbb lsubb slubb bubsl ubbsl bbusl bbusl ubbsl bubsl busbl ubsbl bsubl sbubl usbbl subbl bbsul bbsul bsbul sbbul bsbul sbbul ubsbl busbl usbbl subbl bsubl sbubl blbsu lbbsu bblsu bblsu lbbsu blbsu blsbu lbsbu bslbu sblbu lsbbu slbbu bbslu bbslu bsblu sbblu bsblu sbblu lbsbu blsbu lsbbu slbbu bslbu sblbu ulbsb lubsb ublsb bulsb lbusb blusb ulsbb lusbb uslbb sulbb lsubb slubb ubslb buslb usblb sublb bsulb sbulb lbsub blsub lsbub slbub bslub sblub
Note: these 'words' (valid or invalid) are all the permutations of the word bulbs. These words are obtained by scrambling the letters in bulbs.