dddd ddss didi dido dids diii diis dior dios dird dirr dirs dis- disd disi diso diss dod- dodd dodi dodo dods doid dois dood door doos dord dori doro dorr dors dosi doso doss drod drrs dsdr dsos dsri dsrr dssi iddo idid idio idir idis idos idro idso idss iiii iiio iiis iioi iioo iios iirs iisd iisi iisr iod- iodd iodo ioii ioio iooi iooo ioos iori iors ioso irdo irds iri- irid irio iris irod irri irrs isds isis iso- isor isos isri issi isso issr isss oddd oddi odds odio odir odis odoo odor odos odso oido oids oiii oios oisd oodi ooid oooo ooos oord oosi ordo ords ori- orid orio oris oro- oror oros orri orro orrs orsi orso osdi osii osis osoi osoo osor osos osrd osro ossd ossi osso rdio rdos rdso ridd ridi rido rids riis rios riri rirs risd risi riso riss rodd rodi rodo rods roid roio roir rois rood rooi roor roos rori roro rosi roso ross rrrr rsdd rsds rsid rsis rsos s-ii s-os sdds sdio sdrs sdss sidd sidi sido sidr sids siod sior sios siri siro sirr sirs sisd sisi siss sodd sodo sods soir sois sood soor soos sord sori soro sorr sors sosi soso soss sris sros srsd ssdd ssid ssis ssri ssrs sssi ssss