wtyba twyba wytba ywtba tywba ytwba wtbya twbya wbtya bwtya tbwya btwya wybta ywbta wbyta bwyta ybwta bywta tybwa ytbwa tbywa btywa ybtwa bytwa wtyab twyab wytab ywtab tywab ytwab wtayb twayb watyb awtyb tawyb atwyb wyatb ywatb waytb awytb yawtb aywtb tyawb ytawb taywb atywb yatwb aytwb wtbay twbay wbtay bwtay tbway btway wtaby twaby watby awtby tawby atwby wbaty bwaty wabty awbty bawty abwty tbawy btawy tabwy atbwy batwy abtwy wybat ywbat wbyat bwyat ybwat bywat wyabt ywabt waybt awybt yawbt aywbt wbayt bwayt wabyt awbyt bawyt abwyt ybawt byawt yabwt aybwt baywt abywt tybaw ytbaw tbyaw btyaw ybtaw bytaw tyabw ytabw taybw atybw yatbw aytbw tbayw btayw tabyw atbyw batyw abtyw ybatw byatw yabtw aybtw baytw abytw
Note: these 'words' (valid or invalid) are all the permutations of the word wtyba. These words are obtained by scrambling the letters in wtyba.