roe rog roi rol roo rop ror ros roy rpc rpd rpe rpg rpi rpl rpo rpp rpr rps rrc rrd rrg rri rrl rrp rrr rrs rsc rsd rse rsg rsi rsl rso rsp rsr rss ry- ryc ryd rye ryg ryo ryr rys ryy scc scd sce scg sci scl sco scp scr scs sdc sdd sde sdg sdi sdl sdo sdp sdr sds sdy se- sec sed see seg sei sel seo sep ser ses sey sgc sgd sge sgg sgi sgl sgo sgp sgr sgs sic sid sie sig sii sil sio sip sir sis slc sld sle slg sli sll slo slp slr sls sly soc sod soe sog soi sol soo sop sor sos soy spc spd spe spg spi spl spo spp spr sps spy sr- src srd sre srg sri srl sro srp srr srs sry ss- ssc ssd sse ssg ssi ssl sso ssp ssr sss sy- syc syd sye syg syi syl syp syr sys ycc ycd yce yci ycl yco ycp ycs ycy yde ydg ydl ydo yds ydy yec yed yee yeg yei yel yeo yep yer yes yey ygc ygl ygo yid yie yig yii yio yip yir yis ylc yld yle ylg yli yll ylr yls yly yoc yod yoe yog yoi yol yoo yop yor yos yoy ypd ypg ypl ypo yps yrc yre yrg yro yrp yrs ysc yse ysg ysi ysl yso ysp ysr yss ysy yyc yye yyg yys yyy