bowrs obwrs bwors wbors owbrs wobrs borws obrws brows rbows orbws robws bwros wbros brwos rbwos wrbos rwbos owrbs worbs orwbs rowbs wrobs rwobs bowsr obwsr bwosr wbosr owbsr wobsr boswr obswr bsowr sbowr osbwr sobwr bwsor wbsor bswor sbwor wsbor swbor owsbr wosbr oswbr sowbr wsobr swobr borsw obrsw brosw rbosw orbsw robsw bosrw obsrw bsorw sborw osbrw sobrw brsow rbsow bsrow sbrow rsbow srbow orsbw rosbw osrbw sorbw rsobw srobw bwrso wbrso brwso rbwso wrbso rwbso bwsro wbsro bswro sbwro wsbro swbro brswo rbswo bsrwo sbrwo rsbwo srbwo wrsbo rwsbo wsrbo swrbo rswbo srwbo owrsb worsb orwsb rowsb wrosb rwosb owsrb wosrb oswrb sowrb wsorb sworb orswb roswb osrwb sorwb rsowb srowb wrsob rwsob wsrob swrob rswob srwob
Note: these 'words' (valid or invalid) are all the permutations of the word bowrs. These words are obtained by scrambling the letters in bowrs.