-er a-a a-c aaa aac aae aag aah aan aar ac- aca acc ace acg ach acn acr aea aec aee aeg aeh aen aer ag- aga agc age agg agh agn agr aha ahc ahe ahg ahh ahn ahr an- ana anc ane ang anh ann anr ar- ara arc are arg arh arn arr c-- caa cac cae cag cah can car cca ccc cce ccg cch ccn ccr ce- cea cec cee ceg ceh cen cer cga cgc cge cgg cgh cgn cgr ch- cha chc che chg chh chn chr cn- cna cnc cne cng cnh cnn cnr cra crc cre crg crh crn crr eaa eac eae eag eah ean ear ec- eca ecc ece ecg ech ecn ecr eea eec eee eeg een eer ega egc ege egg egh egn egr eha ehc ehe ehg ehh ehn ehr en- ena enc ene eng enh enn enr era erc ere erg erh ern err gaa gac gae gag gah gan gar gca gcc gce gcg gch gcn gcr ge- gea gec gee geg geh gen ger gga ggc ggg ggh ggn ggr gha ghc ghe ghg ghh ghn ghr gna gnc gne gnn gnr gra grc gre grg grh grn grr haa hac hae hag hah han har hca hcc hce hcg hch hcn hcr he- hea hec hee heg heh hen her hga hgc hge hgg hgh hgn hgr hha hhc hhe hhg hhh hhn hhr hna hnc hne hng hnh hnn hr- hra hrc hre hrg hrh hrn hrr naa nac nae nag nah nan nar nca ncc nce ncg nch ncn ncr ne- nea nec nee neg neh nen ner nga ngc nge ngg ngh ngn nha nhc nhe nhg nhh nhn nhr nna nnc nne nng nnh nnn nra nrc nre nrg nrn nrr ra- raa rac rae rag rah ran rar rca rcc rce rcg rch rcn rcr re- rea rec ree reg reh ren rer rga rgc rge rgg rgh rgn rgr rh- rha rhc rhe rhg rhh rhn rhr rna rnc rng rnh rnn rnr rra rrc rrg rrh rrn rrr