butes ubtes btues tbues utbes tubes buets ubets beuts ebuts uebts eubts bteus tbeus betus ebtus tebus etbus utebs tuebs uetbs eutbs teubs etubs butse ubtse btuse tbuse utbse tubse buste ubste bsute sbute usbte subte btsue tbsue bstue sbtue tsbue stbue utsbe tusbe ustbe sutbe tsube stube buest ubest beust ebust uebst eubst buset ubset bsuet sbuet usbet subet besut ebsut bseut sbeut esbut sebut uesbt eusbt usebt suebt esubt seubt btesu tbesu betsu ebtsu tebsu etbsu btseu tbseu bsteu sbteu tsbeu stbeu bestu ebstu bsetu sbetu esbtu sebtu tesbu etsbu tsebu stebu estbu setbu utesb tuesb uetsb eutsb teusb etusb utseb tuseb usteb suteb tsueb stueb uestb eustb usetb suetb esutb seutb tesub etsub tseub steub estub setub
Note: these 'words' (valid or invalid) are all the permutations of the word butes. These words are obtained by scrambling the letters in butes.