probs rpobs porbs oprbs ropbs orpbs prbos rpbos pbros bpros rbpos brpos pobrs opbrs pbors bpors obprs boprs robps orbps rbops brops obrps borps prosb rposb porsb oprsb ropsb orpsb prsob rpsob psrob sprob rspob srpob posrb opsrb psorb sporb osprb soprb rospb orspb rsopb sropb osrpb sorpb prbso rpbso pbrso bprso rbpso brpso prsbo rpsbo psrbo sprbo rspbo srpbo pbsro bpsro psbro spbro bspro sbpro rbspo brspo rsbpo srbpo bsrpo sbrpo pobsr opbsr pbosr bposr obpsr bopsr posbr opsbr psobr spobr ospbr sopbr pbsor bpsor psbor spbor bspor sbpor obspr bospr osbpr sobpr bsopr sbopr robsp orbsp rbosp brosp obrsp borsp rosbp orsbp rsobp srobp osrbp sorbp rbsop brsop rsbop srbop bsrop sbrop obsrp bosrp osbrp sobrp bsorp sborp
Note: these 'words' (valid or invalid) are all the permutations of the word probs. These words are obtained by scrambling the letters in probs.