ornhd ronhd onrhd norhd rnohd nrohd orhnd rohnd ohrnd hornd rhond hrond onhrd nohrd ohnrd honrd nhord hnord rnhod nrhod rhnod hrnod nhrod hnrod orndh rondh onrdh nordh rnodh nrodh ordnh rodnh odrnh dornh rdonh dronh ondrh nodrh odnrh donrh ndorh dnorh rndoh nrdoh rdnoh drnoh ndroh dnroh orhdn rohdn ohrdn hordn rhodn hrodn ordhn rodhn odrhn dorhn rdohn drohn ohdrn hodrn odhrn dohrn hdorn dhorn rhdon hrdon rdhon drhon hdron dhron onhdr nohdr ohndr hondr nhodr hnodr ondhr nodhr odnhr donhr ndohr dnohr ohdnr hodnr odhnr dohnr hdonr dhonr nhdor hndor ndhor dnhor hdnor dhnor rnhdo nrhdo rhndo hrndo nhrdo hnrdo rndho nrdho rdnho drnho ndrho dnrho rhdno hrdno rdhno drhno hdrno dhrno nhdro hndro ndhro dnhro hdnro dhnro
Note: these 'words' (valid or invalid) are all the permutations of the word ornhd. These words are obtained by scrambling the letters in ornhd.