-er a-a a-c aaa aac aae aag aah aan aar aas ac- aca acc ace acg ach acn acr acs aea aec aee aeg aeh aen aer aes ag- aga agc age agg agh agn agr ags aha ahc ahe ahg ahh ahn ahr ahs an- ana anc ane ang anh ann anr ans ar- ara arc are arg arh arn arr ars as- asa asc ase asg ash asn asr ass c-- caa cac cae cag cah can car cas cca ccc cce ccg cch ccn ccr ccs ce- cea cec cee ceg ceh cen cer ces cga cgc cge cgg cgh cgn cgr cgs ch- cha chc che chg chh chn chr chs cn- cna cnc cne cng cnh cnn cnr cns cra crc cre crg crh crn crr crs csa csc cse csg csh csn csr css eaa eac eae eag eah ean ear eas ec- eca ecc ece ecg ech ecn ecr ecs eea eec eee eeg een eer ees ega egc ege egg egh egn egr egs eha ehc ehe ehg ehh ehn ehr ehs en- ena enc ene eng enh enn enr ens era erc ere erg erh ern err ers es- esa esc ese esg esh esn esr ess gaa gac gae gag gah gan gar gas gca gcc gce gcg gch gcn gcr gcs ge- gea gec gee geg geh gen ger ges gga ggc ggg ggh ggn ggr ggs gha ghc ghe ghg ghh ghn ghr ghs gna gnc gne gnn gnr gns gra grc gre grg grh grn grr grs gsa gsc gse gsg gsn gsr gss haa hac hae hag hah han har has hca hcc hce hcg hch hcn hcr hcs he- hea hec hee heg heh hen her hes hga hgc hge hgg hgh hgn hgr hgs hha hhc hhe hhg hhh hhn hhr hhs hna hnc hne hng hnh hnn hns hr- hra hrc hre hrg hrh hrn hrr hrs hsa hsc hse hsg hsh hsn hsr hss naa nac nae nag nah nan nar nas nca ncc nce ncg nch ncn ncr ncs ne- nea nec nee neg neh nen ner nes nga ngc nge ngg ngh ngn ngs nha nhc nhe nhg nhh nhn nhr nhs nna nnc nne nng nnh nnn nns nra nrc nre nrg nrn nrr nrs nsa nsc nse nsg nsh nsn nsr nss ra- raa rac rae rag rah ran rar ras rca rcc rce rcg rch rcn rcr rcs re- rea rec ree reg reh ren rer res rga rgc rge rgg rgh rgn rgr rgs rh- rha rhc rhe rhg rhh rhn rhr rhs rna rnc rng rnh rnn rnr rns rra rrc rrg rrh rrn rrr rrs rsa rsc rse rsg rsh rsn rsr rss saa sac sae sag sah san sar sas sca scc sce scg sch scn scr scs se- sea sec see seg seh sen ser ses sga sgc sge sgg sgh sgn sgr sgs sh- sha shc she shg shh shn shr shs sna snc sne sng snn snr sns sr- sra src sre srg srh srn srr srs ss- ssa ssc sse ssg ssh ssn ssr sss