-ic a-a a-c a-i aaa aac aad aae aaf aag aai aan ac- aca acc acd ace acf acg aci acn ad- ada adc add ade adf adg adi adn aea aec aed aee aef aeg aei aen af- afa afc afd afe aff afg afi afn ag- aga agc agd age agf agg agi agn ai- aia aic aid aie aif aig aii ain an- ana anc and ane anf ang ani ann c-- caa cac cad cae caf cag cai can cca ccc ccd cce ccf ccg cci ccn cda cdc cdd cde cdf cdg cdi cdn ce- cea cec ced cee cef ceg cei cen cfa cfc cfd cfe cff cfg cfi cfn cga cgc cgd cge cgg cgi cgn ci- cia cic cid cie cif cig cii cin cn- cna cnc cnd cne cnf cng cni cnn daa dac dad dae daf dag dai dan dca dcc dcd dce dcf dcg dci dcn dda ddc ddd dde ddf ddg ddi ddn de- dea dec ded dee def deg dei den dfa dfc dfd dfe dff dfg dfi dfn dga dgc dgd dge dgf dgg dgi dgn di- dia dic did die dif dig dii din dna dnc dnd dne dnf dng dni dnn eaa eac ead eae eaf eag eai ean ec- eca ecc ecd ece ecf ecg eci ecn ed- eda edc edd ede edf edg edi edn eea eec eed eee eef eeg een ef- efa efc efd efe eff efg efi ega egc egd ege egf egg egi egn eia eic eid eie eif eig eii ein en- ena enc end ene enf eng eni enn faa fac fad fae faf fag fai fan fca fcc fcd fce fcf fcg fci fcn fda fdc fdd fde fdf fdg fdi fdn fea fec fed fee fef feg fei fen ffa ffc ffd ffe fff ffg ffi ffn fga fgc fgd fge fgf fgg fgi fgn fia fic fid fie fif fig fii fin fna fnc fnd fne fnf fng fni fnn g-d gaa gac gad gae gaf gag gai gan gca gcc gcd gce gcf gcg gci gcn gda gdc gdd gde gdf gdi gdn ge- gea gec ged gee gef geg gei gen gfa gfc gfd gfe gff gfi gga ggc ggd ggg ggi ggn gia gic gid gie gif gig gii gin gna gnc gnd gne gnf gni gnn i-d i-f ia- iaa iac iad iae iaf iag iai ian ica icc icd ice icf icg ici icn ida idc idd ide idf idg idi idn ie- iea iec ied iee ief ieg iei ien ifa ifc ifd ife iff ifg ifi ifn iga igc igd ige igf igg igi ign iia iic iid iie iif iii iin in- ina inc ind ine inf ing ini inn n-i naa nac nad nae naf nag nai nan nca ncc ncd nce ncf ncg nci ncn nda ndc ndd nde ndf ndg ndi ndn ne- nea nec ned nee nef neg nei nen nfa nfc nfd nfe nff nfi nfn nga ngc ngd nge ngf ngg ngi ngn nia nic nid nie nif nig nii nin nna nnc nne nnf nng nni nnn