-al a-a a-c aaa aac aad aae aaf aag aal aan ac- aca acc acd ace acf acg acl acn ad- ada adc add ade adf adg adl adn aea aec aed aee aef aeg ael aen af- afa afc afd afe aff afg afl afn ag- aga agc agd age agf agg agl agn al- ala alc ald ale alf alg all aln an- ana anc and ane anf ang anl ann c-- caa cac cad cae caf cag cal can cca ccc ccd cce ccf ccg ccl ccn cda cdc cdd cde cdf cdg cdl cdn ce- cea cec ced cee cef ceg cel cen cfa cfc cfd cfe cff cfg cfl cfn cga cgc cgd cge cgg cgl cgn cl- cla clc cld cle clf clg cll cln cn- cna cnc cnd cne cnf cng cnl cnn daa dac dad dae daf dag dal dan dca dcc dcd dce dcf dcg dcl dcn dda ddc ddd dde ddf ddg ddl ddn de- dea dec ded dee def deg del den dfa dfc dfd dfe dff dfg dfl dfn dga dgc dgd dge dgf dgg dgl dgn dl- dla dlc dld dle dlf dlg dll dna dnc dnd dne dnf dng dnl dnn eaa eac ead eae eaf eag eal ean ec- eca ecc ecd ece ecf ecg ecl ecn ed- eda edc edd ede edf edg edl edn eea eec eed eee eef eeg eel een ef- efa efc efd efe eff efg efl ega egc egd ege egf egg egl egn ela elc eld ele elf elg ell eln en- ena enc end ene enf eng enl enn faa fac fad fae faf fag fal fan fca fcc fcd fce fcf fcg fcl fcn fda fdc fdd fde fdf fdg fdl fdn fea fec fed fee fef feg fel fen ffa ffc ffd ffe fff ffg ffl ffn fga fgc fgd fge fgf fgg fgl fgn fla flc fld fle flf flg fll fln fna fnc fnd fne fnf fng fnl fnn g-d gaa gac gad gae gaf gag gal gan gca gcc gcd gce gcf gcg gcl gcn gda gdc gdd gde gdf gdl gdn ge- gea gec ged gee gef geg gel gen gfa gfc gfd gfe gff gfl gga ggc ggd ggg ggn gla glc gld gle glf glg gll gln gna gnc gnd gne gnf gnl gnn la- laa lac lad lae laf lag lal lan lca lcc lcd lce lcf lcg lcl lcn lda ldc ldd lde ldf ldg ldl ldn lea lec led lee lef leg lel len lfa lfc lfd lfe lff lfg lfl lfn lga lgc lgd lge lgf lgg lgl lgn lla llc lld lle llf llg lll lln lna lnc lnd lne lng lnl lnn naa nac nad nae naf nag nal nan nca ncc ncd nce ncf ncg ncl ncn nda ndc ndd nde ndf ndg ndl ndn ne- nea nec ned nee nef neg nel nen nfa nfc nfd nfe nff nfl nfn nga ngc ngd nge ngf ngg ngl ngn nla nlc nld nle nlf nlg nll nln nna nnc nne nnf nng nnl nnn