-er a-a a-c aaa aac aad aae aaf aag aar aau ac- aca acc acd ace acf acg acr acu ad- ada adc add ade adf adg adr adu aea aec aed aee aef aeg aer aeu af- afa afc afd afe aff afg afr afu ag- aga agc agd age agf agg agr agu ar- ara arc ard are arf arg arr aru au- aua auc aud aue auf aug aur c-- caa cac cad cae caf cag car cau cca ccc ccd cce ccf ccg ccr ccu cda cdc cdd cde cdf cdg cdr cdu ce- cea cec ced cee cef ceg cer ceu cfa cfc cfd cfe cff cfg cfr cfu cga cgc cgd cge cgg cgr cgu cra crc crd cre crf crg crr cru cua cuc cud cue cuf cug cur cuu daa dac dad dae daf dag dar dau dca dcc dcd dce dcf dcg dcr dcu dda ddc ddd dde ddf ddg ddr ddu de- dea dec ded dee def deg der deu dfa dfc dfd dfe dff dfg dfr dfu dga dgc dgd dge dgf dgg dgr dgu dra drc drd dre drg drr dru dua duc dud due duf dug dur eaa eac ead eae eaf eag ear eau ec- eca ecc ecd ece ecf ecg ecr ecu ed- eda edc edd ede edf edg edr edu eea eec eed eee eef eeg eer ef- efa efc efd efe eff efg efr ega egc egd ege egf egg egr egu era erc erd ere erf erg err eru eu- eua euc eud eue euf eug eur faa fac fad fae faf fag far fau fca fcc fcd fce fcf fcg fcr fcu fda fdc fdd fde fdf fdg fdr fdu fea fec fed fee fef feg fer feu ffa ffc ffd ffe fff ffg ffr ffu fga fgc fgd fge fgf fgg fgr fra frc frd fre frf frg frr fru fua fud fue fuf fug fur fuu g-d gaa gac gad gae gaf gag gar gau gca gcc gcd gce gcf gcg gcr gcu gda gdc gdd gde gdf gdr gdu ge- gea gec ged gee gef geg ger geu gfa gfc gfd gfe gff gfr gga ggc ggd ggg ggr ggu gra grc grd gre grf grg grr gru gu- gua guc gud gue guf gug gur guu ra- raa rac rad rae raf rag rar rau rca rcc rcd rce rcf rcg rcr rcu rda rdc rdd rde rdf rdg rdr rdu re- rea rec red ree ref reg rer reu rfa rfc rfd rfe rff rfg rfr rfu rga rgc rgd rge rgf rgg rgr rra rrc rrd rrf rrg rrr rru rua ruc rud rue ruf rug rur ruu ua- uaa uac uad uae uaf uag uar uau uca ucc ucd uce ucf ucg ucr ucu uda udc udd ude udf udg udr udu uea uec ued uee uef ueg uer ufa ufc ufd ufe uff ufg ufr ufu uga ugc uge ugf ugg ugr ugu ur- ura urc urd ure urf urg urr uru uua uuc uue uug uur uuu