nigar ingar ngiar gniar ignar ginar niagr inagr naigr anigr iangr aingr ngair gnair nagir angir ganir agnir iganr gianr iagnr aignr gainr aginr nigra ingra ngira gnira ignra ginra nirga inrga nriga rniga irnga ringa ngria gnria nrgia rngia grnia rgnia igrna girna irgna rigna grina rgina niarg inarg nairg anirg ianrg ainrg nirag inrag nriag rniag irnag rinag narig anrig nraig rnaig arnig ranig iarng airng irang riang aring raing ngari gnari nagri angri ganri agnri ngrai gnrai nrgai rngai grnai rgnai nargi anrgi nragi rnagi arngi rangi garni agrni grani rgani argni ragni igarn giarn iagrn aigrn gairn agirn igran giran irgan rigan grian rgian iargn airgn iragn riagn arign raign garin agrin grain rgain argin ragin
Note: these 'words' (valid or invalid) are all the permutations of the word nigar. These words are obtained by scrambling the letters in nigar.