a-a a-c aaa aac aag aan aar aas aau ac- aca acc acg acn acr acs acu ag- aga agc agg agn agr ags agu an- ana anc ang ann anr ans anu ar- ara arc arg arn arr ars aru as- asa asc asg asn asr ass asu au- aua auc aug aun aur aus c-- caa cac cag can car cas cau cca ccc ccg ccn ccr ccs ccu cga cgc cgg cgn cgr cgs cgu cn- cna cnc cng cnn cnr cns cnu cra crc crg crn crr crs cru csa csc csg csn csr css csu cua cuc cug cun cur cus cuu gaa gac gag gan gar gas gau gca gcc gcg gcn gcr gcs gcu gga ggc ggg ggn ggr ggs ggu gna gnc gnn gnr gns gnu gra grc grg grn grr grs gru gsa gsc gsg gsn gsr gss gsu gu- gua guc gug gun gur gus guu naa nac nag nan nar nas nau nca ncc ncg ncn ncr ncs ncu nga ngc ngg ngn ngs ngu nna nnc nng nnn nns nnu nra nrc nrg nrn nrr nrs nru nsa nsc nsg nsn nsr nss nsu nua nuc nug nun nur nus nuu ra- raa rac rag ran rar ras rau rca rcc rcg rcn rcr rcs rcu rga rgc rgg rgn rgr rgs rna rnc rng rnn rnr rns rnu rra rrc rrg rrn rrr rrs rru rsa rsc rsg rsn rsr rss rsu rua ruc rug run rur rus ruu saa sac sag san sar sas sau sca scc scg scn scr scs scu sga sgc sgg sgn sgr sgs sgu sna snc sng snn snr sns snu sr- sra src srg srn srr srs ss- ssa ssc ssg ssn ssr sss ssu sua suc sug sun sur sus suu ua- uaa uac uag uan uar uas uau uca ucc ucg ucn ucr ucs ucu uga ugc ugg ugn ugr ugs ugu un- una unc ung unn unr uns unu ur- ura urc urg urn urr urs uru usa usc usg usn usr uss usu uua uuc uug uun uur uus uuu