rfa rfd rfe rff rfj rfk rfl rfn rfo rfr rfs rja rjf rjk rjr rke rkf rkk rko rks rla rld rle rlf rll rln rlo rlr rls rna rnd rnn rno rnr rns roa rod roe rof roj rok rol ron roo ror ros rra rrd rrf rrk rrl rrn rrr rrs rsa rsd rse rsf rsj rsk rsl rsn rso rsr rss saa sad sae saf saj sak sal san sao sar sas sda sdd sde sdf sdj sdk sdl sdn sdo sdr sds se- sea sed see sef sej sek sel sen seo ser ses sfa sfd sfe sff sfj sfk sfl sfn sfo sfr sfs sja sjd sje sjf sjj sjk sjr sjs sk- ska skd ske skf skj skk skl sko skr sks sla sld sle slf slj slk sll sln slo slr sls sna snd sne snf snj snk snl snn sno snr sns soa sod soe sof soj sok sol son soo sor sos sr- sra srd sre srf srj srk srl srn sro srr srs ss- ssa ssd sse ssf ssj ssk ssl ssn sso ssr sss