-er -ic a-a a-c a-i aaa aac aae aag aai aam aar ac- aca acc ace acg aci acm acr aea aec aee aeg aei aem aer ag- aga agc age agg agi agm agr ai- aia aic aie aig aii aim air ama amc ame amg ami amm amr ar- ara arc are arg ari arm arr c-- caa cac cae cag cai cam car cca ccc cce ccg cci ccm ccr ce- cea cec cee ceg cei cem cer cga cgc cge cgg cgi cgm cgr ci- cia cic cie cig cii cim cir cma cmc cme cmg cmi cmm cmr cra crc cre crg cri crm crr eaa eac eae eag eai eam ear ec- eca ecc ece ecg eci ecm ecr eea eec eee eeg eem eer ega egc ege egg egi egm egr eia eic eie eig eii eim eir em- ema emc eme emg emi emm emr era erc ere erg eri erm err gaa gac gae gag gai gam gar gca gcc gce gcg gci gcm gcr ge- gea gec gee geg gei gem ger gga ggc ggg ggi ggm ggr gia gic gie gig gii gim gir gma gmc gme gmg gmi gmm gmr gra grc gre grg gri grm grr ia- iaa iac iae iag iai iam iar ica icc ice icg ici icm icr ie- iea iec iee ieg iei iem ier iga igc ige igg igi igm igr iia iic iie iii iim iir im- ima imc ime img imi imm ir- ira irc ire irg iri irm irr m-r maa mac mae mag mai mam mar mc- mca mcc mce mcg mci mcm mcr mea mec mee meg mei mem mer mga mgc mge mgi mgm mgr mi- mia mic mie mig mii mim mir mma mmc mme mmg mmi mmm mmr mra mrc mre mrg mri mrm mrr ra- raa rac rae rag rai ram rar rca rcc rce rcg rci rcm rcr re- rea rec ree reg rei rem rer rga rgc rge rgg rgi rgr ria ric rie rig rii rim rir rma rmc rme rmg rmi rmm rmr rra rrc rrg rri rrm rrr