ry- ryf ryn ryo ryr rys ryy sbb sbf sbh sbi sbl sbn sbo sbp sbr sbs sby sfb sff sfh sfi sfl sfn sfo sfp sfr sfs sh- shb shf shh shi shl shn sho shp shr shs shy sib sif sih sii sil sin sio sip sir sis slb slf slh sli sll sln slo slp slr sls sly snb snf sni snl snn sno snp snr sns sny sob sof soh soi sol son soo sop sor sos soy spb spf sph spi spl spn spo spp spr sps spy sr- srb srf srh sri srl srn sro srp srr srs sry ss- ssb ssf ssh ssi ssl ssn sso ssp ssr sss sy- syb syh syi syl syn syp syr sys ybf ybi ybl ybp ybr ybs yby yff yfr yfs yhi yhs yif yih yii yin yio yip yir yis yli yll ylr yls yly ynn ynp yns yny yob yof yoi yol yon yoo yop yor yos yoy ypf ypl ypo yps yrf yrn yro yrp yrs ysb ysi ysl yso ysp ysr yss ysy yyb yyf yys yyy