bugle ubgle bgule gbule ugble guble bulge ublge bluge lbuge ulbge lubge bglue gblue blgue lbgue glbue lgbue uglbe gulbe ulgbe lugbe glube lgube bugel ubgel bguel gbuel ugbel gubel buegl ubegl beugl ebugl uebgl eubgl bgeul gbeul begul ebgul gebul egbul ugebl guebl uegbl eugbl geubl egubl buleg ubleg blueg lbueg ulbeg lubeg buelg ubelg beulg ebulg ueblg eublg bleug lbeug belug eblug lebug elbug ulebg luebg uelbg eulbg leubg elubg bgleu gbleu blgeu lbgeu glbeu lgbeu bgelu gbelu beglu ebglu geblu egblu blegu lbegu belgu eblgu lebgu elbgu glebu lgebu gelbu eglbu legbu elgbu ugleb guleb ulgeb lugeb glueb lgueb ugelb guelb ueglb euglb geulb egulb ulegb luegb uelgb eulgb leugb elugb gleub lgeub gelub eglub legub elgub
Note: these 'words' (valid or invalid) are all the permutations of the word bugle. These words are obtained by scrambling the letters in bugle.