dddd ddps ddss didi dids diii diis diiv dipp dips dird dirr dirs dis- disd disi disp diss divd divi divs dpsd dpvs drip drrs drsp dsdp dsdr dsip dsps dsri dsrp dsrr dssi dssp dsvd dvdr dvds dvi- dvii dvir dvrp dvrs dvsr idid idir idis idps idss idvd iiii iiis iirs iisd iisi iisp iisr ipdi ipid ippr ipri ipsi ipsp ipss ipvs irdp irds iri- irid irip iris irps irri irrs irsp irvs isds isis ispr isps isri isrp issi issp issr isss ivdr ivrs pdpr pdrs pdsd pdss pids piip pipi pipp pips piri pirr pirs pisd pisi piss ppds ppid pppd pppp ppps ppss pri- prid prii pris priv prpd prps prrd prri prrs prsd prsi prss prsv psdi psdp psdr psds psid psip psis pspi pspp pspr psps psrd psrp rdvs ridd ridi rids riis ripd ripi ripp ripr rips riri rirs risd risi risp riss rivp rivs rpdp rpii rpps rrrr rrsp rsdd rsds rsid rsis rsps rsvp rvsp s-ii s-iv sdds sdpr sdps sdrs sdss sidd sidi sidr sids sipi sipp sips siri sirp sirr sirs sisd sisi siss sivi spdp spdr spip spir spis spiv sppd spps sprd spri sprs spsd spsp spss sris srps srsd srsp ssdd ssdp ssid ssis ssps ssri ssrs sssi ssss ssvp svir vdsi vidi vids viii vipr vips viri virr visd visi visp viss vivi vrdi vris vrsi vsip vsrp vvvv