rinfo irnfo rnifo nrifo inrfo nirfo rifno irfno rfino frino ifrno firno rnfio nrfio rfnio frnio nfrio fnrio infro nifro ifnro finro nfiro fniro rinof irnof rniof nriof inrof nirof rionf ironf roinf orinf iornf oirnf rnoif nroif ronif ornif norif onrif inorf niorf ionrf oinrf noirf onirf rifon irfon rfion frion ifron firon riofn irofn roifn orifn iorfn oirfn rfoin froin rofin orfin forin ofrin iforn fiorn iofrn oifrn foirn ofirn rnfoi nrfoi rfnoi frnoi nfroi fnroi rnofi nrofi ronfi ornfi norfi onrfi rfoni froni rofni orfni forni ofrni nfori fnori nofri onfri fonri ofnri infor nifor ifnor finor nfior fnior inofr niofr ionfr oinfr noifr onifr ifonr fionr iofnr oifnr foinr ofinr nfoir fnoir nofir onfir fonir ofnir
Note: these 'words' (valid or invalid) are all the permutations of the word rinfo. These words are obtained by scrambling the letters in rinfo.