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