ntyba tnyba nytba yntba tynba ytnba ntbya tnbya nbtya bntya tbnya btnya nybta ynbta nbyta bnyta ybnta bynta tybna ytbna tbyna btyna ybtna bytna ntyab tnyab nytab yntab tynab ytnab ntayb tnayb natyb antyb tanyb atnyb nyatb ynatb naytb anytb yantb ayntb tyanb ytanb taynb atynb yatnb aytnb ntbay tnbay nbtay bntay tbnay btnay ntaby tnaby natby antby tanby atnby nbaty bnaty nabty anbty banty abnty tbany btany tabny atbny batny abtny nybat ynbat nbyat bnyat ybnat bynat nyabt ynabt naybt anybt yanbt aynbt nbayt bnayt nabyt anbyt banyt abnyt ybant byant yabnt aybnt baynt abynt tyban ytban tbyan btyan ybtan bytan tyabn ytabn taybn atybn yatbn aytbn tbayn btayn tabyn atbyn batyn abtyn ybatn byatn yabtn aybtn baytn abytn
Note: these 'words' (valid or invalid) are all the permutations of the word ntyba. These words are obtained by scrambling the letters in ntyba.