sab sad sag sai sak san sao sar sas say sba sbb sbd sbg sbi sbk sbn sbo sbr sbs sby sda sdb sdd sdg sdi sdk sdn sdo sdr sds sdy sga sgb sgd sgg sgi sgk sgn sgo sgr sgs sia sib sid sig sii sik sin sio sir sis sk- ska skb skd skg ski skk sko skr sks sky sna snb snd sng sni snk snn sno snr sns sny soa sob sod sog soi sok son soo sor sos soy sr- sra srb srd srg sri srk srn sro srr srs sry ss- ssa ssb ssd ssg ssi ssk ssn sso ssr sss sy- sya syb syd syg syi syk syn syr sys yaa yab yad yag yai yak yan yao yar yas yay ybg ybi ybr ybs yby yda ydg ydn ydo yds ydy yga ygo yid yig yii yin yio yir yis yka yki ykk ykn yna ynd yng ynk ynn yns yny yob yod yog yoi yok yon yoo yor yos yoy yra yrg yrn yro yrs ysa ysb ysg ysi ysk yso ysr yss ysy yyb yyg yys yyy