mpsri pmsri mspri smpri psmri spmri mprsi pmrsi mrpsi rmpsi prmsi rpmsi msrpi smrpi mrspi rmspi srmpi rsmpi psrmi sprmi prsmi rpsmi srpmi rspmi mpsir pmsir mspir smpir psmir spmir mpisr pmisr mipsr impsr pimsr ipmsr msipr smipr mispr imspr simpr ismpr psimr spimr pismr ipsmr sipmr ispmr mpris pmris mrpis rmpis prmis rpmis mpirs pmirs miprs imprs pimrs ipmrs mrips rmips mirps imrps rimps irmps prims rpims pirms iprms ripms irpms msrip smrip mrsip rmsip srmip rsmip msirp smirp misrp imsrp simrp ismrp mrisp rmisp mirsp imrsp rimsp irmsp srimp rsimp sirmp isrmp rismp irsmp psrim sprim prsim rpsim srpim rspim psirm spirm pisrm ipsrm siprm isprm prism rpism pirsm iprsm ripsm irpsm sripm rsipm sirpm isrpm rispm irspm
Note: these 'words' (valid or invalid) are all the permutations of the word mpsri. These words are obtained by scrambling the letters in mpsri.