-er -ic a-a a-c a-i aaa aac aae aai aam aar aas aax ac- aca acc ace aci acm acr acs acx aea aec aee aei aem aer aes aex ai- aia aic aie aii aim air ais aix ama amc ame ami amm amr ams amx ar- ara arc are ari arm arr ars arx as- asa asc ase asi asm asr ass asx ax- axa axe axi axm axr axs axx c-- caa cac cae cai cam car cas cax cca ccc cce cci ccm ccr ccs ccx ce- cea cec cee cei cem cer ces cex ci- cia cic cie cii cim cir cis cix cma cmc cme cmi cmm cmr cms cmx cra crc cre cri crm crr crs crx csa csc cse csi csm csr css csx cxc cxi cxr cxs cxx eaa eac eae eai eam ear eas eax ec- eca ecc ece eci ecm ecr ecs ecx eea eec eee eem eer ees eex eia eic eie eii eim eir eis eix em- ema emc eme emi emm emr ems emx era erc ere eri erm err ers es- esa esc ese esi esm esr ess esx ex- exa exc exe exi exr exs exx ia- iaa iac iae iai iam iar ias ica icc ice ici icm icr ics ie- iea iec iee iei iem ier ies iex iia iic iie iii iim iir iis iix im- ima imc ime imi imm ims imx ir- ira irc ire iri irm irr irs irx is- isa isc ise isi ism isr iss ixc ixe ixi m-r maa mac mae mai mam mar mas max mc- mca mcc mce mci mcm mcr mcs mcx mea mec mee mei mem mer mes mex mi- mia mic mie mii mim mir mis mix mma mmc mme mmi mmm mmr mms mmx mra mrc mre mri mrm mrr mrs mrx msa msc mse msi msm msr mss msx mxa mxc mxi mxr mxs ra- raa rac rae rai ram rar ras rax rca rcc rce rci rcm rcr rcs rcx re- rea rec ree rei rem rer res rex ria ric rie rii rim rir ris rix rma rmc rme rmi rmm rmr rms rmx rra rrc rri rrm rrr rrs rsa rsc rse rsi rsm rsr rss rsx rxr rxs saa sac sae sai sam sar sas sax sca scc sce sci scm scr scs scx se- sea sec see sei sem ser ses sex sia sic sie sii sim sir sis six sma smc sme smi smm smr sms smx sr- sra src sre sri srm srr srs srx ss- ssa ssc sse ssi ssm ssr sss ssx sxc sxi sxm sxs xaa xac xam xar xas xci xcr xcx xee xem xer xes xex xia xic xie xii xis xix xma xmc xmi xmm xmr xms xmx xrc xrx xsa xsc xsi xsm xss xxi xxx