rfr rfs rma rmc rmd rme rmf rmm rmn rmo rmr rms rna rnc rnd rnm rnn rno rnr rns rny roa roc rod roe rof rom ron roo ror ros roy rra rrc rrd rrf rrm rrn rrr rrs rsa rsc rsd rse rsf rsm rsn rso rsr rss ry- rya ryc ryd rye ryf rym ryn ryo ryr rys ryy saa sac sad sae saf sam san sao sar sas say sca scc scd sce scf scm scn sco scr scs sda sdc sdd sde sdf sdm sdn sdo sdr sds sdy se- sea sec sed see sef sem sen seo ser ses sey sfa sfc sfd sfe sff sfm sfn sfo sfr sfs sma smc smd sme smf smm smn smo smr sms smy sna snc snd sne snf snm snn sno snr sns sny soa soc sod soe sof som son soo sor sos soy sr- sra src srd sre srf srm srn sro srr srs sry ss- ssa ssc ssd sse ssf ssm ssn sso ssr sss sy- sya syc syd sye sym syn syr sys yaa yac yad yae yaf yam yan yao yar yas yay yca ycc ycd yce ycf yco ycs ycy yda yde ydn ydo yds ydy yea yec yed yee yef yem yen yeo yer yes yey yfa yfc yfd yfe yff yfm yfr yfs yma ymc yme ymm ymo yms yna ynd yne ynn yns yny yoc yod yoe yof yom yon yoo yor yos yoy yra yrc yre yrf yrn yro yrs ysa ysc yse ysm yso ysr yss ysy yyc yye yyf yys yyy