ontar notar otnar tonar ntoar tnoar onatr noatr oantr aontr naotr anotr otanr toanr oatnr aotnr taonr atonr ntaor tnaor nator antor tanor atnor ontra notra otnra tonra ntora tnora onrta norta ornta ronta nrota rnota otrna torna ortna rotna trona rtona ntroa tnroa nrtoa rntoa trnoa rtnoa onart noart oanrt aonrt naort anort onrat norat ornat ronat nroat rnoat oarnt aornt orant roant aront raont narot anrot nraot rnaot arnot ranot otarn toarn oatrn aotrn taorn atorn otran toran ortan rotan troan rtoan oartn aortn oratn roatn arotn raotn taron atron traon rtaon arton raton ntaro tnaro natro antro tanro atnro ntrao tnrao nrtao rntao trnao rtnao narto anrto nrato rnato arnto ranto tarno atrno trano rtano artno ratno
Note: these 'words' (valid or invalid) are all the permutations of the word ontar. These words are obtained by scrambling the letters in ontar.