tubae utbae tbuae btuae ubtae butae tuabe utabe taube atube uatbe autbe tbaue btaue tabue atbue batue abtue ubate buate uabte aubte baute abute tubea utbea tbuea btuea ubtea butea tueba uteba teuba etuba uetba eutba tbeua bteua tebua etbua betua ebtua ubeta bueta uebta eubta beuta ebuta tuaeb utaeb taueb atueb uateb auteb tueab uteab teuab etuab uetab eutab taeub ateub teaub etaub aetub eatub uaetb auetb ueatb euatb aeutb eautb tbaeu btaeu tabeu atbeu bateu abteu tbeau bteau tebau etbau betau ebtau taebu atebu teabu etabu aetbu eatbu baetu abetu beatu ebatu aebtu eabtu ubaet buaet uabet aubet bauet abuet ubeat bueat uebat eubat beuat ebuat uaebt auebt ueabt euabt aeubt eaubt baeut abeut beaut ebaut aebut eabut
Note: these 'words' (valid or invalid) are all the permutations of the word tubae. These words are obtained by scrambling the letters in tubae.