nubby unbby nbuby bnuby ubnby bunby nubby unbby nbuby bnuby ubnby bunby nbbuy bnbuy nbbuy bnbuy bbnuy bbnuy ubbny bubny ubbny bubny bbuny bbuny nubyb unbyb nbuyb bnuyb ubnyb bunyb nuybb unybb nyubb ynubb uynbb yunbb nbyub bnyub nybub ynbub bynub ybnub ubynb buynb uybnb yubnb byunb ybunb nubyb unbyb nbuyb bnuyb ubnyb bunyb nuybb unybb nyubb ynubb uynbb yunbb nbyub bnyub nybub ynbub bynub ybnub ubynb buynb uybnb yubnb byunb ybunb nbbyu bnbyu nbbyu bnbyu bbnyu bbnyu nbybu bnybu nybbu ynbbu bynbu ybnbu nbybu bnybu nybbu ynbbu bynbu ybnbu bbynu bbynu bybnu ybbnu bybnu ybbnu ubbyn bubyn ubbyn bubyn bbuyn bbuyn ubybn buybn uybbn yubbn byubn ybubn ubybn buybn uybbn yubbn byubn ybubn bbyun bbyun bybun ybbun bybun ybbun
Note: these 'words' (valid or invalid) are all the permutations of the word nubby. These words are obtained by scrambling the letters in nubby.