trips rtips tirps itrps ritps irtps trpis rtpis tpris ptris rptis prtis tiprs itprs tpirs ptirs iptrs pitrs ripts irpts rpits prits iprts pirts trisp rtisp tirsp itrsp ritsp irtsp trsip rtsip tsrip strip rstip srtip tisrp itsrp tsirp stirp istrp sitrp ristp irstp rsitp sritp isrtp sirtp trpsi rtpsi tprsi ptrsi rptsi prtsi trspi rtspi tsrpi strpi rstpi srtpi tpsri ptsri tspri stpri pstri sptri rpsti prsti rspti srpti psrti sprti tipsr itpsr tpisr ptisr iptsr pitsr tispr itspr tsipr stipr istpr sitpr tpsir ptsir tspir stpir pstir sptir ipstr pistr isptr siptr psitr spitr ripst irpst rpist prist iprst pirst rispt irspt rsipt sript isrpt sirpt rpsit prsit rspit srpit psrit sprit ipsrt pisrt isprt siprt psirt spirt
Note: these 'words' (valid or invalid) are all the permutations of the word trips. These words are obtained by scrambling the letters in trips.