-er a-a a-c aaa aac aae aag aam aan aar ac- aca acc ace acg acm acn acr aea aec aee aeg aem aen aer ag- aga agc age agg agm agn agr ama amc ame amg amm amn amr an- ana anc ane ang anm ann anr ar- ara arc are arg arm arn arr c-- caa cac cae cag cam can car cca ccc cce ccg ccm ccn ccr ce- cea cec cee ceg cem cen cer cga cgc cge cgg cgm cgn cgr cma cmc cme cmg cmm cmn cmr cn- cna cnc cne cng cnm cnn cnr cra crc cre crg crm crn crr eaa eac eae eag eam ean ear ec- eca ecc ece ecg ecm ecn ecr eea eec eee eeg eem een eer ega egc ege egg egm egn egr em- ema emc eme emg emm emn emr en- ena enc ene eng enm enn enr era erc ere erg erm ern err gaa gac gae gag gam gan gar gca gcc gce gcg gcm gcn gcr ge- gea gec gee geg gem gen ger gga ggc ggg ggm ggn ggr gma gmc gme gmg gmm gmn gmr gna gnc gne gnm gnn gnr gra grc gre grg grm grn grr m-r maa mac mae mag mam man mar mc- mca mcc mce mcg mcm mcn mcr mea mec mee meg mem men mer mga mgc mge mgm mgn mgr mma mmc mme mmg mmm mmn mmr mna mnc mne mng mnm mnn mnr mra mrc mre mrg mrm mrn mrr naa nac nae nag nam nan nar nca ncc nce ncg ncm ncn ncr ne- nea nec nee neg nem nen ner nga ngc nge ngg ngm ngn nma nmc nme nmg nmm nmn nmr nna nnc nne nng nnm nnn nra nrc nre nrg nrm nrn nrr ra- raa rac rae rag ram ran rar rca rcc rce rcg rcm rcn rcr re- rea rec ree reg rem ren rer rga rgc rge rgg rgn rgr rma rmc rme rmg rmm rmn rmr rna rnc rng rnm rnn rnr rra rrc rrg rrm rrn rrr