a-a a-c a-t aaa aac aaf aag aar aas aat aau ac- aca acc acf acg acr acs act acu af- afa afc aff afg afr afs aft afu ag- aga agc agf agg agr ags agt agu ar- ara arc arf arg arr ars art aru as- asa asc asf asg asr ass ast asu at- ata atc atf atg atr ats att atu au- aua auc auf aug aur aus aut c-- caa cac caf cag car cas cat cau cca ccc ccf ccg ccr ccs cct ccu cfa cfc cff cfg cfr cfs cft cfu cga cgc cgg cgr cgs cgt cgu cra crc crf crg crr crs crt cru csa csc csf csg csr css cst csu cta ctc ctf ctg ctr cts ctt ctu cua cuc cuf cug cur cus cut cuu faa fac faf fag far fas fat fau fca fcc fcf fcg fcr fcs fct fcu ffa ffc fff ffg ffr ffs fft ffu fga fgc fgf fgg fgr fgs fgt fra frc frf frg frr frs frt fru fsa fsc fsf fsg fsr fss fst fsu fta ftc ftf ftg ftr fts ftt ftu fua fuf fug fur fus fut fuu gaa gac gaf gag gar gas gat gau gca gcc gcf gcg gcr gcs gct gcu gfa gfc gff gfr gfs gft gga ggc ggg ggr ggs ggt ggu gra grc grf grg grr grs grt gru gsa gsc gsf gsg gsr gss gst gsu gta gtc gtf gtg gtr gts gtt gtu gu- gua guc guf gug gur gus gut guu ra- raa rac raf rag rar ras rat rau rca rcc rcf rcg rcr rcs rct rcu rfa rfc rff rfg rfr rfs rft rfu rga rgc rgf rgg rgr rgs rgt rra rrc rrf rrg rrr rrs rrt rru rsa rsc rsf rsg rsr rss rst rsu rta rtc rtf rtg rtr rts rtt rtu rua ruc ruf rug rur rus rut ruu saa sac saf sag sar sas sat sau sca scc scf scg scr scs sct scu sfa sfc sff sfg sfr sfs sft sfu sga sgc sgf sgg sgr sgs sgt sgu sr- sra src srf srg srr srs srt ss- ssa ssc ssf ssg ssr sss sst ssu sta stc stf stg str sts stt stu sua suc suf sug sur sus sut suu taa tac taf tag tar tas tat tau tca tcc tcf tcg tcr tcs tct tcu tfa tfc tff tfg tfr tfs tft tfu tga tgc tgf tgg tgr tgs tgt tgu tra trc trf trg trr trs trt tru tsa tsc tsf tsg tsr tss tst tsu tta ttc ttf ttg ttr tts ttt ttu tua tuc tuf tug tur tus tut tuu ua- uaa uac uaf uag uar uas uat uau uca ucc ucf ucg ucr ucs uct ucu ufa ufc uff ufg ufr ufs uft ufu uga ugc ugf ugg ugr ugs ugt ugu ur- ura urc urf urg urr urs urt uru usa usc usf usg usr uss ust usu uta utc utf utr uts utt utu uua uuc uug uur uus uut uuu