-er -ic a-a a-c a-i aaa aac aae aag aai aam aar aas ac- aca acc ace acg aci acm acr acs aea aec aee aeg aei aem aer aes ag- aga agc age agg agi agm agr ags ai- aia aic aie aig aii aim air ais ama amc ame amg ami amm amr ams ar- ara arc are arg ari arm arr ars as- asa asc ase asg asi asm asr ass c-- caa cac cae cag cai cam car cas cca ccc cce ccg cci ccm ccr ccs ce- cea cec cee ceg cei cem cer ces cga cgc cge cgg cgi cgm cgr cgs ci- cia cic cie cig cii cim cir cis cma cmc cme cmg cmi cmm cmr cms cra crc cre crg cri crm crr crs csa csc cse csg csi csm csr css eaa eac eae eag eai eam ear eas ec- eca ecc ece ecg eci ecm ecr ecs eea eec eee eeg eem eer ees ega egc ege egg egi egm egr egs eia eic eie eig eii eim eir eis em- ema emc eme emg emi emm emr ems era erc ere erg eri erm err ers es- esa esc ese esg esi esm esr ess gaa gac gae gag gai gam gar gas gca gcc gce gcg gci gcm gcr gcs ge- gea gec gee geg gei gem ger ges gga ggc ggg ggi ggm ggr ggs gia gic gie gig gii gim gir gis gma gmc gme gmg gmi gmm gmr gms gra grc gre grg gri grm grr grs gsa gsc gse gsg gsi gsm gsr gss ia- iaa iac iae iag iai iam iar ias ica icc ice icg ici icm icr ics ie- iea iec iee ieg iei iem ier ies iga igc ige igg igi igm igr igs iia iic iie iii iim iir iis im- ima imc ime img imi imm ims ir- ira irc ire irg iri irm irr irs is- isa isc ise isg isi ism isr iss m-r maa mac mae mag mai mam mar mas mc- mca mcc mce mcg mci mcm mcr mcs mea mec mee meg mei mem mer mes mga mgc mge mgi mgm mgr mgs mi- mia mic mie mig mii mim mir mis mma mmc mme mmg mmi mmm mmr mms mra mrc mre mrg mri mrm mrr mrs msa msc mse msg msi msm msr mss ra- raa rac rae rag rai ram rar ras rca rcc rce rcg rci rcm rcr rcs re- rea rec ree reg rei rem rer res rga rgc rge rgg rgi rgr rgs ria ric rie rig rii rim rir ris rma rmc rme rmg rmi rmm rmr rms rra rrc rrg rri rrm rrr rrs rsa rsc rse rsg rsi rsm rsr rss saa sac sae sag sai sam sar sas sca scc sce scg sci scm scr scs se- sea sec see seg sei sem ser ses sga sgc sge sgg sgi sgm sgr sgs sia sic sie sig sii sim sir sis sma smc sme smg smi smm smr sms sr- sra src sre srg sri srm srr srs ss- ssa ssc sse ssg ssi ssm ssr sss