-er a-a a-c a-t aaa aac aae aaf aag aap aar aat ac- aca acc ace acf acg acp acr act aea aec aee aef aeg aep aer aet af- afa afc afe aff afg afp afr aft ag- aga agc age agf agg agp agr agt ap- apa apc ape apf apg app apr apt ar- ara arc are arf arg arp arr art at- ata atc ate atf atg atp atr att c-- caa cac cae caf cag cap car cat cca ccc cce ccf ccg ccp ccr cct ce- cea cec cee cef ceg cep cer cet cfa cfc cfe cff cfg cfp cfr cft cga cgc cge cgg cgp cgr cgt cpa cpc cpe cpf cpg cpp cpr cpt cra crc cre crf crg crp crr crt cta ctc cte ctf ctg ctp ctr ctt eaa eac eae eaf eag eap ear eat ec- eca ecc ece ecf ecg ecr ect eea eec eee eef eeg eep eer eet ef- efa efc efe eff efg efp efr eft ega egc ege egf egg egp egr egt ep- epa epc epe epf epg epp epr ept era erc ere erf erg erp err ert eta etc ete etf etg etp etr ett faa fac fae faf fag fap far fat fca fcc fce fcf fcg fcp fcr fct fea fec fee fef feg fep fer fet ffa ffc ffe fff ffg ffp ffr fft fga fgc fge fgf fgg fgp fgr fgt fpa fpc fpe fpg fpp fpr fpt fra frc fre frf frg frp frr frt fta ftc fte ftf ftg ftp ftr ftt g-p gaa gac gae gaf gag gap gar gat gca gcc gce gcf gcg gcp gcr gct ge- gea gec gee gef geg gep ger get gfa gfc gfe gff gfp gfr gft gga ggc ggg ggp ggr ggt gpa gpc gpe gpf gpg gpp gpr gpt gra grc gre grf grg grp grr grt gta gtc gte gtf gtg gtp gtr gtt p-p paa pac pae paf pag pap par pat pca pcc pce pcf pcg pcp pcr pct pea pec pee pef peg pep per pet pfa pfc pfe pff pfg pfp pfr pft pga pgc pge pgf pgg pgp pgr pgt ppa ppc ppe ppf ppg ppp ppr ppt pra prc pre prf prg prp prr prt pt- pta ptc pte ptf ptg ptp ptr ptt ra- raa rac rae raf rag rap rar rat rca rcc rce rcf rcg rcp rcr rct re- rea rec ree ref reg rep rer ret rfa rfc rfe rff rfg rfp rfr rft rga rgc rge rgf rgg rgp rgr rgt rpa rpc rpe rpf rpg rpp rpr rpt rra rrc rrf rrg rrp rrr rrt rta rtc rte rtf rtg rtp rtr rtt taa tac tae taf tag tap tar tat tca tcc tce tcf tcg tcp tcr tct te- tea tec tee tef teg tep ter tet tfa tfc tfe tff tfg tfp tfr tft tga tgc tge tgf tgg tgp tgr tgt tpa tpc tpe tpf tpg tpp tpr tpt tra trc tre trf trg trp trr trt tta ttc tte ttf ttg ttp ttr ttt