porta oprta prota rpota orpta ropta potra optra ptora tpora otpra topra prtoa rptoa ptroa tproa rtpoa trpoa ortpa rotpa otrpa torpa rtopa tropa porat oprat proat rpoat orpat ropat poart opart paort aport oaprt aoprt praot rpaot parot aprot rapot arpot orapt roapt oarpt aorpt raopt aropt potar optar ptoar tpoar otpar topar poatr opatr paotr apotr oaptr aoptr ptaor tpaor pator aptor tapor atpor otapr toapr oatpr aotpr taopr atopr prtao rptao ptrao tprao rtpao trpao prato rpato parto aprto rapto arpto ptaro tparo patro aptro tapro atpro rtapo trapo ratpo artpo tarpo atrpo ortap rotap otrap torap rtoap troap oratp roatp oartp aortp raotp arotp otarp toarp oatrp aotrp taorp atorp rtaop traop ratop artop tarop atrop
Note: these 'words' (valid or invalid) are all the permutations of the word porta. These words are obtained by scrambling the letters in porta.