-er -ic a-a a-c a-i aaa aac aad aae aag aai aar ac- aca acc acd ace acg aci acr ad- ada adc add ade adg adi adr aea aec aed aee aeg aei aer ag- aga agc agd age agg agi agr ai- aia aic aid aie aig aii air ar- ara arc ard are arg ari arr c-- caa cac cad cae cag cai car cca ccc ccd cce ccg cci ccr cda cdc cdd cde cdg cdi cdr ce- cea cec ced cee ceg cei cer cga cgc cgd cge cgg cgi cgr ci- cia cic cid cie cig cii cir cra crc crd cre crg cri crr daa dac dad dae dag dai dar dca dcc dcd dce dcg dci dcr dda ddc ddd dde ddg ddi ddr de- dea dec ded dee deg dei der dga dgc dgd dge dgg dgi dgr di- dia dic did die dig dii dir dra drc drd dre drg dri drr eaa eac ead eae eag eai ear ec- eca ecc ecd ece ecg eci ecr ed- eda edc edd ede edg edi edr eea eec eed eee eeg eer ega egc egd ege egg egi egr eia eic eid eie eig eii eir era erc erd ere erg eri err g-d gaa gac gad gae gag gai gar gca gcc gcd gce gcg gci gcr gda gdc gdd gde gdi gdr ge- gea gec ged gee geg gei ger gga ggc ggd ggg ggi ggr gia gic gid gie gig gii gir gra grc grd gre grg gri grr i-d ia- iaa iac iad iae iag iai iar ica icc icd ice icg ici icr ida idc idd ide idg idi idr ie- iea iec ied iee ieg iei ier iga igc igd ige igg igi igr iia iic iid iie iii iir ir- ira irc ird ire irg iri irr ra- raa rac rad rae rag rai rar rca rcc rcd rce rcg rci rcr rda rdc rdd rde rdg rdi rdr re- rea rec red ree reg rei rer rga rgc rgd rge rgg rgi rgr ria ric rid rie rig rii rir rra rrc rrd rrg rri rrr