rpg rph rpi rpo rpp rpr rps rrc rrd rrg rrh rri rrp rrr rrs rsc rsd rse rsg rsh rsi rso rsp rsr rss ry- ryc ryd rye ryg ryo ryr rys ryy scc scd sce scg sch sci sco scp scr scs sdc sdd sde sdg sdh sdi sdo sdp sdr sds sdy se- sec sed see seg seh sei seo sep ser ses sey sgc sgd sge sgg sgh sgi sgo sgp sgr sgs sh- shc shd she shg shh shi sho shp shr shs shy sic sid sie sig sih sii sio sip sir sis soc sod soe sog soh soi soo sop sor sos soy spc spd spe spg sph spi spo spp spr sps spy sr- src srd sre srg srh sri sro srp srr srs sry ss- ssc ssd sse ssg ssh ssi sso ssp ssr sss sy- syc syd sye syg syh syi syp syr sys ycc ycd yce ych yci yco ycp ycs ycy yde ydg ydo yds ydy yec yed yee yeg yeh yei yeo yep yer yes yey ygc ygo yhc yhe yhi yhs yid yie yig yih yii yio yip yir yis yoc yod yoe yog yoi yoo yop yor yos yoy ypd ypg ypo yps yrc yre yrg yro yrp yrs ysc yse ysg ysi yso ysp ysr yss ysy yyc yye yyg yys yyy