sbr sbs sby se- seb see seg sei sek sen seo sep ser ses sey sgb sge sgg sgi sgk sgn sgo sgp sgr sgs sib sie sig sii sik sin sio sip sir sis sk- skb ske skg ski skk sko skp skr sks sky snb sne sng sni snk snn sno snp snr sns sny sob soe sog soi sok son soo sop sor sos soy spb spe spg spi spk spn spo spp spr sps spy sr- srb sre srg sri srk srn sro srp srr srs sry ss- ssb sse ssg ssi ssk ssn sso ssp ssr sss sy- syb sye syg syi syk syn syp syr sys ybe ybg ybi ybp ybr ybs yby yeb yee yeg yei yek yen yeo yep yer yes yey ygo yie yig yii yin yio yip yir yis yki ykk ykn yne yng ynk ynn ynp yns yny yob yoe yog yoi yok yon yoo yop yor yos yoy ypg ypo yps yre yrg yrn yro yrp yrs ysb yse ysg ysi ysk yso ysp ysr yss ysy yyb yye yyg yys yyy