nabis anbis nbais bnais abnis banis naibs anibs niabs inabs ainbs ianbs nbias bnias nibas inbas binas ibnas abins bains aibns iabns bians ibans nabsi anbsi nbasi bnasi abnsi bansi nasbi ansbi nsabi snabi asnbi sanbi nbsai bnsai nsbai snbai bsnai sbnai absni basni asbni sabni bsani sbani naisb anisb niasb inasb ainsb iansb nasib ansib nsaib snaib asnib sanib nisab insab nsiab sniab isnab sinab aisnb iasnb asinb sainb isanb sianb nbisa bnisa nibsa inbsa binsa ibnsa nbsia bnsia nsbia snbia bsnia sbnia nisba insba nsiba sniba isnba sinba bisna ibsna bsina sbina isbna sibna abisn baisn aibsn iabsn biasn ibasn absin basin asbin sabin bsain sbain aisbn iasbn asibn saibn isabn siabn bisan ibsan bsian sbian isban siban
Note: these 'words' (valid or invalid) are all the permutations of the word nabis. These words are obtained by scrambling the letters in nabis.