dddd ddps ddss didi dids diii diis din- dini dinn dins dipn dipp dips dird dirr dirs dis- disd disi disp diss dnis dpin dpni dpsd drin drip drrs drsp dsdp dsdr dsip dsps dsri dsrp dsrr dssi dssn dssp idid idin idir idis idps idss iiii iiis iirs iisd iisi iisp iisr ind- indi inds inid inis inni innr inns inp- inpi inpp inri inrs insp inss ipdi ipid ipin ippr ipri ipsi ipsp ipss irdp irds iri- irid irin irip iris irps irri irrs irsp isdn isds isin isis ispr isps isri isrp issi issp issr isss n-ii ndnp ndpd ndpr ndps ndri ndsi ndss nidd nidi nids niip niir nind nini nins nipr nips nirs nisd nisi nisp niss nnnn nnpi nnpr nnss npin nppd npri npss nrds nrpn nrps nrrd nrsp nsds nsin nsis nsnr nspi nsps nsrd nssp nssr nsss pdns pdpn pdpr pdrs pdsd pdss pids piip pind pini pinn pinp pins pipi pipp pips piri pirn pirr pirs pisd pisi piss pnin pnpp ppds ppid pppd pppn pppp ppps ppss pri- prid prii prin pris prnd prnp prpd prps prrd prri prrs prsd prsi prss psdi psdp psdr psds psid psip psis psni psnr pspi pspp pspr psps psrd psrp ridd ridi rids riin riis rind rinn ripd ripi ripp ripr rips riri rirs risd risi risp riss rndp rnds rnin rnsp rpdp rpii rppn rpps rrrr rrsp rsdd rsds rsid rsis rsnn rsnr rsps s-ii sdds sdpr sdps sdrs sdss sidd sidi sidr sids sind sini sinn sinp sins sipi sipp sips siri sirp sirr sirs sisd sisi siss snid snip snir snns snpp snrs snsd spdp spdr spin spip spir spis spns sppd spps sprd spri sprs spsd spsp spss sris srni srnn srps srsd srsp ssdd ssdp ssid ssin ssis ssns ssps ssri ssrs sssi ssss