thrip htrip trhip rthip hrtip rhtip thirp htirp tihrp ithrp hitrp ihtrp trihp rtihp tirhp itrhp rithp irthp hritp rhitp hirtp ihrtp rihtp irhtp thrpi htrpi trhpi rthpi hrtpi rhtpi thpri htpri tphri pthri hptri phtri trphi rtphi tprhi ptrhi rpthi prthi hrpti rhpti hprti phrti rphti prhti thipr htipr tihpr ithpr hitpr ihtpr thpir htpir tphir pthir hptir phtir tiphr itphr tpihr ptihr ipthr pithr hiptr ihptr hpitr phitr iphtr pihtr triph rtiph tirph itrph ritph irtph trpih rtpih tprih ptrih rptih prtih tiprh itprh tpirh ptirh iptrh pitrh ripth irpth rpith prith iprth pirth hript rhipt hirpt ihrpt rihpt irhpt hrpit rhpit hprit phrit rphit prhit hiprt ihprt hpirt phirt iphrt pihrt ripht irpht rpiht priht iprht pirht
Note: these 'words' (valid or invalid) are all the permutations of the word thrip. These words are obtained by scrambling the letters in thrip.