-er a-a a-c aaa aac aae aah aam aar aax ac- aca acc ace ach acm acr acx aea aec aee aeh aem aer aex aha ahc ahe ahh ahm ahr ahx ama amc ame amh amm amr amx ar- ara arc are arh arm arr arx ax- axa axe axh axm axr axx c-- caa cac cae cah cam car cax cca ccc cce cch ccm ccr ccx ce- cea cec cee ceh cem cer cex ch- cha chc che chh chm chr chx cma cmc cme cmh cmm cmr cmx cra crc cre crh crm crr crx cxc cxh cxr cxx eaa eac eae eah eam ear eax ec- eca ecc ece ech ecm ecr ecx eea eec eee eem eer eex eha ehc ehe ehh ehm ehr em- ema emc eme emh emm emr emx era erc ere erh erm err ex- exa exc exe exh exr exx haa hac hae hah ham har hax hca hcc hce hch hcm hcr he- hea hec hee heh hem her hex hha hhc hhe hhh hhm hhr hma hmc hme hmh hmm hmr hmx hr- hra hrc hre hrh hrm hrr hxc hxm m-r maa mac mae mah mam mar max mc- mca mcc mce mch mcm mcr mcx mea mec mee meh mem mer mex mha mhc mhh mhm mhr mhx mma mmc mme mmh mmm mmr mmx mra mrc mre mrh mrm mrr mrx mxa mxc mxr ra- raa rac rae rah ram rar rax rca rcc rce rch rcm rcr rcx re- rea rec ree reh rem rer rex rh- rha rhc rhe rhh rhm rhr rma rmc rme rmh rmm rmr rmx rra rrc rrh rrm rrr rxr xaa xac xam xar xch xcr xcx xee xem xer xex xma xmc xmh xmm xmr xmx xrc xrx xxx