-al a-a a-c aaa aac aae aaf aag aah aal aan ac- aca acc ace acf acg ach acl acn aea aec aee aef aeg aeh ael aen af- afa afc afe aff afg afh afl afn ag- aga agc age agf agg agh agl agn aha ahc ahe ahf ahg ahh ahl ahn al- ala alc ale alf alg alh all aln an- ana anc ane anf ang anh anl ann c-- caa cac cae caf cag cah cal can cca ccc cce ccf ccg cch ccl ccn ce- cea cec cee cef ceg ceh cel cen cfa cfc cfe cff cfg cfh cfl cfn cga cgc cge cgg cgh cgl cgn ch- cha chc che chf chg chh chl chn cl- cla clc cle clf clg clh cll cln cn- cna cnc cne cnf cng cnh cnl cnn eaa eac eae eaf eag eah eal ean ec- eca ecc ece ecf ecg ech ecl ecn eea eec eee eef eeg eel een ef- efa efc efe eff efg efh efl ega egc ege egf egg egh egl egn eha ehc ehe ehf ehg ehh ehl ehn ela elc ele elf elg elh ell eln en- ena enc ene enf eng enh enl enn faa fac fae faf fag fah fal fan fca fcc fce fcf fcg fcl fcn fea fec fee fef feg feh fel fen ffa ffc ffe fff ffg ffh ffl ffn fga fgc fge fgf fgg fgh fgl fgn fha fhc fhe fhf fhg fhh fhl fhn fla flc fle flf flg fll fln fna fnc fne fnf fng fnh fnl fnn gaa gac gae gaf gag gah gal gan gca gcc gce gcf gcg gch gcl gcn ge- gea gec gee gef geg geh gel gen gfa gfc gfe gff gfh gfl gga ggc ggg ggh ggn gha ghc ghe ghg ghh ghl ghn gla glc gle glf glg glh gll gln gna gnc gne gnf gnl gnn haa hac hae haf hag hah hal han hca hcc hce hcf hcg hch hcl hcn he- hea hec hee hef heg heh hel hen hfa hfc hfe hff hfg hfh hfl hfn hga hgc hge hgf hgg hgh hgl hgn hha hhc hhe hhf hhg hhh hhl hhn hla hlc hle hlf hlg hlh hll hln hna hnc hne hnf hng hnh hnl hnn la- laa lac lae laf lag lah lal lan lca lcc lce lcf lcg lch lcl lcn lea lec lee lef leg leh lel len lfa lfc lfe lff lfg lfh lfl lfn lga lgc lge lgf lgg lgh lgl lgn lha lhc lhf lhh lla llc lle llf llg lll lln lna lnc lne lng lnh lnl lnn naa nac nae naf nag nah nal nan nca ncc nce ncf ncg nch ncl ncn ne- nea nec nee nef neg neh nel nen nfa nfc nfe nff nfl nfn nga ngc nge ngf ngg ngh ngl ngn nha nhc nhe nhf nhg nhh nhl nhn nla nlc nle nlf nlg nlh nll nln nna nnc nne nnf nng nnh nnl nnn