sharn hsarn sahrn ashrn hasrn ahsrn shran hsran srhan rshan hrsan rhsan sarhn asrhn srahn rsahn arshn rashn harsn ahrsn hrasn rhasn arhsn rahsn shanr hsanr sahnr ashnr hasnr ahsnr shnar hsnar snhar nshar hnsar nhsar sanhr asnhr snahr nsahr anshr nashr hansr ahnsr hnasr nhasr anhsr nahsr shrna hsrna srhna rshna hrsna rhsna shnra hsnra snhra nshra hnsra nhsra srnha rsnha snrha nsrha rnsha nrsha hrnsa rhnsa hnrsa nhrsa rnhsa nrhsa sarnh asrnh sranh rsanh arsnh rasnh sanrh asnrh snarh nsarh ansrh nasrh srnah rsnah snrah nsrah rnsah nrsah arnsh ransh anrsh narsh rnash nrash harns ahrns hrans rhans arhns rahns hanrs ahnrs hnars nhars anhrs nahrs hrnas rhnas hnras nhras rnhas nrhas arnhs ranhs anrhs narhs rnahs nrahs
Note: these 'words' (valid or invalid) are all the permutations of the word sharn. These words are obtained by scrambling the letters in sharn.