a-a a-c aaa aac aag aan aao aar aas aau ac- aca acc acg acn aco acr acs acu ag- aga agc agg agn ago agr ags agu an- ana anc ang ann ano anr ans anu aoa aoc aog aon aoo aor aos aou ar- ara arc arg arn aro arr ars aru as- asa asc asg asn aso asr ass asu au- aua auc aug aun auo aur aus c-- caa cac cag can cao car cas cau cca ccc ccg ccn cco ccr ccs ccu cga cgc cgg cgn cgo cgr cgs cgu cn- cna cnc cng cnn cno cnr cns cnu co- coa coc cog con coo cor cos cou cra crc crg crn cro crr crs cru csa csc csg csn cso csr css csu cua cuc cug cun cuo cur cus cuu gaa gac gag gan gao gar gas gau gca gcc gcg gcn gco gcr gcs gcu gga ggc ggg ggn ggo ggr ggs ggu gna gnc gnn gno gnr gns gnu goa goc gog gon goo gor gos gou gra grc grg grn gro grr grs gru gsa gsc gsg gsn gso gsr gss gsu gu- gua guc gug gun guo gur gus guu naa nac nag nan nao nar nas nau nca ncc ncg ncn nco ncr ncs ncu nga ngc ngg ngn ngo ngs ngu nna nnc nng nnn nno nns nnu no- noa noc nog non noo nor nos nou nra nrc nrg nrn nro nrr nrs nru nsa nsc nsg nsn nso nsr nss nsu nua nuc nug nun nuo nur nus nuu oaa oac oag oan oao oar oas oau oc- oca occ ocg ocn oco ocr ocs ocu oga ogc ogg ogn ogo ogs on- ona onc ong onn ono onr ons onu oo- ooa ooc oog oon ooo oor oos or- ora orc org orn oro orr ors oru os- osa osc osg osn oso osr oss osu ou- oua ouc oun ouo our ous ra- raa rac rag ran rao rar ras rau rca rcc rcg rcn rco rcr rcs rcu rga rgc rgg rgn rgo rgr rgs rna rnc rng rnn rno rnr rns rnu roa roc rog ron roo ror ros rou rra rrc rrg rrn rrr rrs rru rsa rsc rsg rsn rso rsr rss rsu rua ruc rug run ruo rur rus ruu saa sac sag san sao sar sas sau sca scc scg scn sco scr scs scu sga sgc sgg sgn sgo sgr sgs sgu sna snc sng snn sno snr sns snu soa soc sog son soo sor sos sou sr- sra src srg srn sro srr srs ss- ssa ssc ssg ssn sso ssr sss ssu sua suc sug sun suo sur sus suu ua- uaa uac uag uan uao uar uas uau uca ucc ucg ucn uco ucr ucs ucu uga ugc ugg ugn ugo ugr ugs ugu un- una unc ung unn uno unr uns unu uoa uoc uog uon uoo uor uos ur- ura urc urg urn uro urr urs uru usa usc usg usn uso usr uss usu uua uuc uug uun uur uus uuu