rrd rrk rrl rrn rrp rrr rrs rsa rsb rsd rsk rsl rsn rso rsp rsr rss ry- rya ryd ryk ryn ryo ryr rys ryy saa sab sad sak sal san sao sap sar sas say sba sbb sbd sbk sbl sbn sbo sbp sbr sbs sby sda sdb sdd sdk sdl sdn sdo sdp sdr sds sdy sk- ska skb skd skk skl sko skp skr sks sky sla slb sld slk sll sln slo slp slr sls sly sna snb snd snk snl snn sno snp snr sns sny soa sob sod sok sol son soo sop sor sos soy spa spb spd spk spl spn spo spp spr sps spy sr- sra srb srd srk srl srn sro srp srr srs sry ss- ssa ssb ssd ssk ssl ssn sso ssp ssr sss sy- sya syb syd syk syl syn syp syr sys yaa yab yad yak yal yan yao yap yar yas yay ybl ybp ybr ybs yby yda ydl ydn ydo yds ydy yka ykk ykn yld ylk yll ylr yls yly yna ynd ynk ynn ynp yns yny yob yod yok yol yon yoo yop yor yos yoy ypa ypd ypl ypo yps yra yrn yro yrp yrs ysa ysb ysk ysl yso ysp ysr yss ysy yyb yys yyy