tabun atbun tbaun btaun abtun batun taubn atubn tuabn utabn autbn uatbn tbuan btuan tuban utban butan ubtan abutn bautn aubtn uabtn buatn ubatn tabnu atbnu tbanu btanu abtnu batnu tanbu atnbu tnabu ntabu antbu natbu tbnau btnau tnbau ntbau bntau nbtau abntu bantu anbtu nabtu bnatu nbatu taunb atunb tuanb utanb autnb uatnb tanub atnub tnaub ntaub antub natub tunab utnab tnuab ntuab untab nutab auntb uantb anutb nautb unatb nuatb tbuna btuna tubna utbna butna ubtna tbnua btnua tnbua ntbua bntua nbtua tunba utnba tnuba ntuba untba nutba bunta ubnta bnuta nbuta unbta nubta abunt baunt aubnt uabnt buant ubant abnut banut anbut nabut bnaut nbaut aunbt uanbt anubt naubt unabt nuabt bunat ubnat bnuat nbuat unbat nubat
Note: these 'words' (valid or invalid) are all the permutations of the word tabun. These words are obtained by scrambling the letters in tabun.