-er a-a a-c aaa aac aae aag aah aam aan aar aax ac- aca acc ace acg ach acm acn acr acx aea aec aee aeg aeh aem aen aer aex ag- aga agc age agg agh agm agn agr agx aha ahc ahe ahg ahh ahm ahn ahr ahx ama amc ame amg amh amm amn amr amx an- ana anc ane ang anh anm ann anr anx ar- ara arc are arg arh arm arn arr arx ax- axa axe axh axm axn axr axx c-- caa cac cae cag cah cam can car cax cca ccc cce ccg cch ccm ccn ccr ccx ce- cea cec cee ceg ceh cem cen cer cex cga cgc cge cgg cgh cgm cgn cgr ch- cha chc che chg chh chm chn chr chx cma cmc cme cmg cmh cmm cmn cmr cmx cn- cna cnc cne cng cnh cnm cnn cnr cnx cra crc cre crg crh crm crn crr crx cxc cxh cxr cxx eaa eac eae eag eah eam ean ear eax ec- eca ecc ece ecg ech ecm ecn ecr ecx eea eec eee eeg eem een eer eex ega egc ege egg egh egm egn egr egx eha ehc ehe ehg ehh ehm ehn ehr em- ema emc eme emg emh emm emn emr emx en- ena enc ene eng enh enm enn enr era erc ere erg erh erm ern err ex- exa exc exe exh exr exx gaa gac gae gag gah gam gan gar gca gcc gce gcg gch gcm gcn gcr ge- gea gec gee geg geh gem gen ger gex gga ggc ggg ggh ggm ggn ggr gha ghc ghe ghg ghh ghn ghr gma gmc gme gmg gmh gmm gmn gmr gmx gna gnc gne gnm gnn gnr gra grc gre grg grh grm grn grr grx gxa haa hac hae hag hah ham han har hax hca hcc hce hcg hch hcm hcn hcr he- hea hec hee heg heh hem hen her hex hga hgc hge hgg hgh hgm hgn hgr hha hhc hhe hhg hhh hhm hhn hhr hma hmc hme hmg hmh hmm hmr hmx hna hnc hne hng hnh hnn hr- hra hrc hre hrg hrh hrm hrn hrr hxc hxm m-r maa mac mae mag mah mam man mar max mc- mca mcc mce mcg mch mcm mcn mcr mcx mea mec mee meg meh mem men mer mex mga mgc mge mgh mgm mgn mgr mgx mha mhc mhg mhh mhm mhn mhr mhx mma mmc mme mmg mmh mmm mmn mmr mmx mna mnc mne mng mnm mnn mnr mra mrc mre mrg mrh mrm mrn mrr mrx mxa mxc mxn mxr naa nac nae nag nah nam nan nar nax nca ncc nce ncg nch ncm ncn ncr ncx ne- nea nec nee neg neh nem nen ner nex nga ngc nge ngg ngh ngm ngn nha nhc nhe nhg nhh nhm nhn nhr nma nmc nme nmg nmh nmm nmn nmr nna nnc nne nng nnh nnm nnn nra nrc nre nrg nrm nrn nrr nrx nxc ra- raa rac rae rag rah ram ran rar rax rca rcc rce rcg rch rcm rcn rcr rcx re- rea rec ree reg reh rem ren rer rex rga rgc rge rgg rgh rgn rgr rgx rh- rha rhc rhe rhg rhh rhm rhn rhr rma rmc rme rmg rmh rmm rmn rmr rmx rna rnc rng rnh rnm rnn rnr rra rrc rrg rrh rrm rrn rrr rxr xaa xac xag xam xan xar xch xcr xcx xee xeg xem xen xer xex xge xma xmc xmg xmh xmm xmr xmx xna xnc xrc xrx xxx