buist ubist biust ibust uibst iubst busit ubsit bsuit sbuit usbit subit bisut ibsut bsiut sbiut isbut sibut uisbt iusbt usibt suibt isubt siubt buits ubits biuts ibuts uibts iubts butis ubtis btuis tbuis utbis tubis bitus ibtus btius tbius itbus tibus uitbs iutbs utibs tuibs itubs tiubs busti ubsti bsuti sbuti usbti subti butsi ubtsi btusi tbusi utbsi tubsi bstui sbtui btsui tbsui stbui tsbui ustbi sutbi utsbi tusbi stubi tsubi bistu ibstu bsitu sbitu isbtu sibtu bitsu ibtsu btisu tbisu itbsu tibsu bstiu sbtiu btsiu tbsiu stbiu tsbiu istbu sitbu itsbu tisbu stibu tsibu uistb iustb usitb suitb isutb siutb uitsb iutsb utisb tuisb itusb tiusb ustib sutib utsib tusib stuib tsuib istub situb itsub tisub stiub tsiub
Note: these 'words' (valid or invalid) are all the permutations of the word buist. These words are obtained by scrambling the letters in buist.