piert ipert peirt epirt ieprt eiprt piret ipret priet rpiet irpet ripet perit eprit preit rpeit erpit repit ierpt eirpt irept riept eript reipt pietr ipetr peitr epitr ieptr eiptr piter ipter ptier tpier itper tiper petir eptir pteir tpeir etpir tepir ietpr eitpr itepr tiepr etipr teipr pirte iprte prite rpite irpte ripte pitre iptre ptire tpire itpre tipre prtie rptie ptrie tprie rtpie trpie irtpe ritpe itrpe tirpe rtipe tripe perti eprti preti rpeti erpti repti petri eptri pteri tperi etpri tepri prtei rptei ptrei tprei rtpei trpei ertpi retpi etrpi terpi rtepi trepi iertp eirtp iretp rietp eritp reitp ietrp eitrp iterp tierp etirp teirp irtep ritep itrep tirep rtiep triep ertip retip etrip terip rteip treip
Note: these 'words' (valid or invalid) are all the permutations of the word piert. These words are obtained by scrambling the letters in piert.