a-a a-c aaa aac aaf aag aar aas aau ac- aca acc acf acg acr acs acu af- afa afc aff afg afr afs afu ag- aga agc agf agg agr ags agu ar- ara arc arf arg arr ars aru as- asa asc asf asg asr ass asu au- aua auc auf aug aur aus c-- caa cac caf cag car cas cau cca ccc ccf ccg ccr ccs ccu cfa cfc cff cfg cfr cfs cfu cga cgc cgg cgr cgs cgu cra crc crf crg crr crs cru csa csc csf csg csr css csu cua cuc cuf cug cur cus cuu faa fac faf fag far fas fau fca fcc fcf fcg fcr fcs fcu ffa ffc fff ffg ffr ffs ffu fga fgc fgf fgg fgr fgs fra frc frf frg frr frs fru fsa fsc fsf fsg fsr fss fsu fua fuf fug fur fus fuu gaa gac gaf gag gar gas gau gca gcc gcf gcg gcr gcs gcu gfa gfc gff gfr gfs gga ggc ggg ggr ggs ggu gra grc grf grg grr grs gru gsa gsc gsf gsg gsr gss gsu gu- gua guc guf gug gur gus guu ra- raa rac raf rag rar ras rau rca rcc rcf rcg rcr rcs rcu rfa rfc rff rfg rfr rfs rfu rga rgc rgf rgg rgr rgs rra rrc rrf rrg rrr rrs rru rsa rsc rsf rsg rsr rss rsu rua ruc ruf rug rur rus ruu saa sac saf sag sar sas sau sca scc scf scg scr scs scu sfa sfc sff sfg sfr sfs sfu sga sgc sgf sgg sgr sgs sgu sr- sra src srf srg srr srs ss- ssa ssc ssf ssg ssr sss ssu sua suc suf sug sur sus suu ua- uaa uac uaf uag uar uas uau uca ucc ucf ucg ucr ucs ucu ufa ufc uff ufg ufr ufs ufu uga ugc ugf ugg ugr ugs ugu ur- ura urc urf urg urr urs uru usa usc usf usg usr uss usu uua uuc uug uur uus uuu