-er -ic a-a a-c a-i aaa aac aad aae aag aai aam aar ac- aca acc acd ace acg aci acm acr ad- ada adc add ade adg adi adm adr aea aec aed aee aeg aei aem aer ag- aga agc agd age agg agi agm agr ai- aia aic aid aie aig aii aim air ama amc amd ame amg ami amm amr ar- ara arc ard are arg ari arm arr c-- caa cac cad cae cag cai cam car cca ccc ccd cce ccg cci ccm ccr cda cdc cdd cde cdg cdi cdm cdr ce- cea cec ced cee ceg cei cem cer cga cgc cgd cge cgg cgi cgm cgr ci- cia cic cid cie cig cii cim cir cma cmc cmd cme cmg cmi cmm cmr cra crc crd cre crg cri crm crr daa dac dad dae dag dai dam dar dca dcc dcd dce dcg dci dcm dcr dda ddc ddd dde ddg ddi ddm ddr de- dea dec ded dee deg dei dem der dga dgc dgd dge dgg dgi dgm dgr di- dia dic did die dig dii dim dir dma dmc dmd dme dmg dmi dmm dmr dra drc drd dre drg dri drm drr eaa eac ead eae eag eai eam ear ec- eca ecc ecd ece ecg eci ecm ecr ed- eda edc edd ede edg edi edm edr eea eec eed eee eeg eem eer ega egc egd ege egg egi egm egr eia eic eid eie eig eii eim eir em- ema emc emd eme emg emi emm emr era erc erd ere erg eri erm err g-d gaa gac gad gae gag gai gam gar gca gcc gcd gce gcg gci gcm gcr gda gdc gdd gde gdi gdm gdr ge- gea gec ged gee geg gei gem ger gga ggc ggd ggg ggi ggm ggr gia gic gid gie gig gii gim gir gma gmc gmd gme gmg gmi gmm gmr gra grc grd gre grg gri grm grr i-d ia- iaa iac iad iae iag iai iam iar ica icc icd ice icg ici icm icr ida idc idd ide idg idi idm idr ie- iea iec ied iee ieg iei iem ier iga igc igd ige igg igi igm igr iia iic iid iie iii iim iir im- ima imc imd ime img imi imm ir- ira irc ird ire irg iri irm irr m-r maa mac mad mae mag mai mam mar mc- mca mcc mcd mce mcg mci mcm mcr mda mdc mdd mde mdg mdi mdm mdr mea mec med mee meg mei mem mer mga mgc mgd mge mgi mgm mgr mi- mia mic mid mie mig mii mim mir mma mmc mmd mme mmg mmi mmm mmr mra mrc mrd mre mrg mri mrm mrr ra- raa rac rad rae rag rai ram rar rca rcc rcd rce rcg rci rcm rcr rda rdc rdd rde rdg rdi rdm rdr re- rea rec red ree reg rei rem rer rga rgc rgd rge rgg rgi rgr ria ric rid rie rig rii rim rir rma rmc rmd rme rmg rmi rmm rmr rra rrc rrd rrg rri rrm rrr