rpi rpl rpm rpn rpo rpp rpr rps rrc rrg rri rrl rrm rrn rrp rrr rrs rsc rsg rsi rsl rsm rsn rso rsp rsr rss ry- ryc ryg rym ryn ryo ryr rys ryy scc scg sci scl scm scn sco scp scr scs sgc sgg sgi sgl sgm sgn sgo sgp sgr sgs sic sig sii sil sim sin sio sip sir sis slc slg sli sll slm sln slo slp slr sls sly smc smg smi sml smm smn smo smp smr sms smy snc sng sni snl snm snn sno snp snr sns sny soc sog soi sol som son soo sop sor sos soy spc spg spi spl spm spn spo spp spr sps spy sr- src srg sri srl srm srn sro srp srr srs sry ss- ssc ssg ssi ssl ssm ssn sso ssp ssr sss sy- syc syg syi syl sym syn syp syr sys ycc yci ycl yco ycp ycs ycy ygc ygl ygm ygo yig yii yim yin yio yip yir yis ylc ylg yli yll ylm ylr yls yly ymc ymg ymi yml ymm ymo yms yng ynn ynp yns yny yoc yog yoi yol yom yon yoo yop yor yos yoy ypg ypl ypo yps yrc yrg yrn yro yrp yrs ysc ysg ysi ysl ysm yso ysp ysr yss ysy yyc yyg yys yyy