dddd ddps ddss didi dids didy diii diis dipp dips dis- disd disi disp diss disy diyi dpsd dpyd dpys dsdp dsip dsps dssi dssp dydd dys- dysi dysp dyss idid idis idps idss iiii iiis iisd iisi iisp ipdi ipid ippy ipsi ipsp ipss isds isis isps ispy issi issp isss issy isys pdsd pdss pids piip pipi pipp pips pipy pisd pisi piss pisy piys ppds ppid pppd pppp ppps ppss psdi psdp psds psid psip psis pspi pspp psps psy- psys pypy pyss s-ii sdds sdps sdss sidd sidi sids sidy sipi sipp sips sipy sisd sisi siss sisy siyi spdp spdy spip spis sppd spps spsd spsp spss spy- spys ssdd ssdp ssid ssis ssps sssi ssss sydi syds syis syss yidi yids yips yiss ypsi ysii yspi yyyy