rgo rgr rgs rja rjg rjk rjr rke rkg rkk rko rks rla rld rle rlg rll rln rlo rlr rls rna rnd rng rnn rno rnr rns roa rod roe rog roj rok rol ron roo ror ros rra rrd rrg rrk rrl rrn rrr rrs rsa rsd rse rsg rsj rsk rsl rsn rso rsr rss saa sad sae sag saj sak sal san sao sar sas sda sdd sde sdg sdj sdk sdl sdn sdo sdr sds se- sea sed see seg sej sek sel sen seo ser ses sga sgd sge sgg sgk sgl sgn sgo sgr sgs sja sjd sje sjj sjk sjr sjs sk- ska skd ske skg skj skk skl sko skr sks sla sld sle slg slj slk sll sln slo slr sls sna snd sne sng snj snk snl snn sno snr sns soa sod soe sog soj sok sol son soo sor sos sr- sra srd sre srg srj srk srl srn sro srr srs ss- ssa ssd sse ssg ssj ssk ssl ssn sso ssr sss