-er -ic a-a a-c a-i aaa aac aad aae aag aai aar aau ac- aca acc acd ace acg aci acr acu ad- ada adc add ade adg adi adr adu aea aec aed aee aeg aei aer aeu ag- aga agc agd age agg agi agr agu ai- aia aic aid aie aig aii air aiu ar- ara arc ard are arg ari arr aru au- aua auc aud aue aug aui aur c-- caa cac cad cae cag cai car cau cca ccc ccd cce ccg cci ccr ccu cda cdc cdd cde cdg cdi cdr cdu ce- cea cec ced cee ceg cei cer ceu cga cgc cgd cge cgg cgi cgr cgu ci- cia cic cid cie cig cii cir ciu cra crc crd cre crg cri crr cru cua cuc cud cue cug cui cur cuu daa dac dad dae dag dai dar dau dca dcc dcd dce dcg dci dcr dcu dda ddc ddd dde ddg ddi ddr ddu de- dea dec ded dee deg dei der deu dga dgc dgd dge dgg dgi dgr dgu di- dia dic did die dig dii dir diu dra drc drd dre drg dri drr dru dua duc dud due dug dui dur eaa eac ead eae eag eai ear eau ec- eca ecc ecd ece ecg eci ecr ecu ed- eda edc edd ede edg edi edr edu eea eec eed eee eeg eer ega egc egd ege egg egi egr egu eia eic eid eie eig eii eir eiu era erc erd ere erg eri err eru eu- eua euc eud eue eug eui eur g-d gaa gac gad gae gag gai gar gau gca gcc gcd gce gcg gci gcr gcu gda gdc gdd gde gdi gdr gdu ge- gea gec ged gee geg gei ger geu gga ggc ggd ggg ggi ggr ggu gia gic gid gie gig gii gir giu gra grc grd gre grg gri grr gru gu- gua guc gud gue gug gui gur guu i-d ia- iaa iac iad iae iag iai iar iau ica icc icd ice icg ici icr icu ida idc idd ide idg idi idr idu ie- iea iec ied iee ieg iei ier iga igc igd ige igg igi igr igu iia iic iid iie iii iir iiu ir- ira irc ird ire irg iri irr iru iu- iua iuc iud iue iug iui iur ra- raa rac rad rae rag rai rar rau rca rcc rcd rce rcg rci rcr rcu rda rdc rdd rde rdg rdi rdr rdu re- rea rec red ree reg rei rer reu rga rgc rgd rge rgg rgi rgr ria ric rid rie rig rii rir rra rrc rrd rrg rri rrr rru rua ruc rud rue rug rui rur ruu ua- uaa uac uad uae uag uai uar uau uca ucc ucd uce ucg uci ucr ucu uda udc udd ude udg udi udr udu uea uec ued uee ueg uei uer uga ugc uge ugg ugi ugr ugu uia uic uid uie uig uii uir uiu ur- ura urc urd ure urg uri urr uru uua uuc uue uug uur uuu