porbh oprbh probh rpobh orpbh ropbh pobrh opbrh pborh bporh obprh boprh prboh rpboh pbroh bproh rbpoh brpoh orbph robph obrph borph rboph broph porhb oprhb prohb rpohb orphb rophb pohrb ophrb phorb hporb ohprb hoprb prhob rphob phrob hprob rhpob hrpob orhpb rohpb ohrpb horpb rhopb hropb pobhr opbhr pbohr bpohr obphr bophr pohbr ophbr phobr hpobr ohpbr hopbr pbhor bphor phbor hpbor bhpor hbpor obhpr bohpr ohbpr hobpr bhopr hbopr prbho rpbho pbrho bprho rbpho brpho prhbo rphbo phrbo hprbo rhpbo hrpbo pbhro bphro phbro hpbro bhpro hbpro rbhpo brhpo rhbpo hrbpo bhrpo hbrpo orbhp robhp obrhp borhp rbohp brohp orhbp rohbp ohrbp horbp rhobp hrobp obhrp bohrp ohbrp hobrp bhorp hborp rbhop brhop rhbop hrbop bhrop hbrop
Note: these 'words' (valid or invalid) are all the permutations of the word porbh. These words are obtained by scrambling the letters in porbh.