a-a a-c aaa aac aag aao aar aas aau ac- aca acc acg aco acr acs acu ag- aga agc agg ago agr ags agu aoa aoc aog aoo aor aos aou ar- ara arc arg aro arr ars aru as- asa asc asg aso asr ass asu au- aua auc aug auo aur aus c-- caa cac cag cao car cas cau cca ccc ccg cco ccr ccs ccu cga cgc cgg cgo cgr cgs cgu co- coa coc cog coo cor cos cou cra crc crg cro crr crs cru csa csc csg cso csr css csu cua cuc cug cuo cur cus cuu gaa gac gag gao gar gas gau gca gcc gcg gco gcr gcs gcu gga ggc ggg ggo ggr ggs ggu goa goc gog goo gor gos gou gra grc grg gro grr grs gru gsa gsc gsg gso gsr gss gsu gu- gua guc gug guo gur gus guu oaa oac oag oao oar oas oau oc- oca occ ocg oco ocr ocs ocu oga ogc ogg ogo ogs oo- ooa ooc oog ooo oor oos or- ora orc org oro orr ors oru os- osa osc osg oso osr oss osu ou- oua ouc ouo our ous ra- raa rac rag rao rar ras rau rca rcc rcg rco rcr rcs rcu rga rgc rgg rgo rgr rgs roa roc rog roo ror ros rou rra rrc rrg rrr rrs rru rsa rsc rsg rso rsr rss rsu rua ruc rug ruo rur rus ruu saa sac sag sao sar sas sau sca scc scg sco scr scs scu sga sgc sgg sgo sgr sgs sgu soa soc sog soo sor sos sou sr- sra src srg sro srr srs ss- ssa ssc ssg sso ssr sss ssu sua suc sug suo sur sus suu ua- uaa uac uag uao uar uas uau uca ucc ucg uco ucr ucs ucu uga ugc ugg ugo ugr ugs ugu uoa uoc uog uoo uor uos ur- ura urc urg uro urr urs uru usa usc usg uso usr uss usu uua uuc uug uur uus uuu