dddd ddss didi dids diii diis diiv dird dirr dirs dis- disd disi diss divd divi divs drrs dsdr dsri dsrr dssi dsvd dvdr dvds dvi- dvii dvir dvrs dvsr idid idir idis idss idvd iiii iiis iirs iisd iisi iisr irds iri- irid iris irri irrs irvs isds isis isri issi issr isss ivdr ivrs rdvs ridd ridi rids riis riri rirs risd risi riss rivs rrrr rsdd rsds rsid rsis s-ii s-iv sdds sdrs sdss sidd sidi sidr sids siri sirr sirs sisd sisi siss sivi sris srsd ssdd ssid ssis ssri ssrs sssi ssss svir vdsi vidi vids viii viri virr visd visi viss vivi vrdi vris vrsi vvvv