ppirn ppirn piprn ipprn piprn ipprn pprin pprin prpin rppin prpin rppin pirpn iprpn pripn rpipn irppn rippn pirpn iprpn pripn rpipn irppn rippn ppinr ppinr pipnr ippnr pipnr ippnr ppnir ppnir pnpir nppir pnpir nppir pinpr ipnpr pnipr npipr inppr nippr pinpr ipnpr pnipr npipr inppr nippr pprni pprni prpni rppni prpni rppni ppnri ppnri pnpri nppri pnpri nppri prnpi rpnpi pnrpi nprpi rnppi nrppi prnpi rpnpi pnrpi nprpi rnppi nrppi pirnp iprnp prinp rpinp irpnp ripnp pinrp ipnrp pnirp npirp inprp niprp prnip rpnip pnrip nprip rnpip nrpip irnpp rinpp inrpp nirpp rnipp nripp pirnp iprnp prinp rpinp irpnp ripnp pinrp ipnrp pnirp npirp inprp niprp prnip rpnip pnrip nprip rnpip nrpip irnpp rinpp inrpp nirpp rnipp nripp
Note: these 'words' (valid or invalid) are all the permutations of the word ppirn. These words are obtained by scrambling the letters in ppirn.