-al a-a a-b a-i aaa aab aae aaf aag aai aal aam aan ab- aba abb abe abf abg abi abl abm abn aea aeb aee aef aeg aei ael aem aen af- afa afb afe aff afg afi afl afm afn ag- aga agb age agf agg agi agl agm agn ai- aia aib aie aif aig aii ail aim ain al- ala alb ale alf alg ali all alm aln ama amb ame amf amg ami aml amm amn an- ana anb ane anf ang ani anl anm ann baa bab bae baf bag bai bal bam ban bba bbb bbe bbf bbg bbi bbl bbm bbn be- bea beb bee bef beg bei bel bem ben bfa bfb bfe bff bfg bfi bfl bfm bfn bga bgb bge bgf bgg bgi bgl bgm bgn bi- bia bib bie bif big bii bil bim bin bla blb ble blf blg bli bll blm bln bma bmb bme bmf bmg bmi bml bmm bmn bna bnb bne bnf bng bni bnl bnn eaa eab eae eaf eag eai eal eam ean eba ebb ebe ebf ebg ebi ebl ebm ebn eea eeb eee eef eeg eel eem een ef- efa efb efe eff efg efi efl efm ega egb ege egf egg egi egl egm egn eia eib eie eif eig eii eil eim ein ela elb ele elf elg eli ell elm eln em- ema emb eme emf emg emi eml emm emn en- ena enb ene enf eng eni enl enm enn faa fab fae faf fag fai fal fam fan fba fbb fbe fbf fbg fbi fbl fbm fbn fea feb fee fef feg fei fel fem fen ffa ffe fff ffg ffi ffl ffm ffn fga fgb fge fgf fgg fgi fgl fgm fgn fia fib fie fif fig fii fil fim fin fla flb fle flf flg fli fll flm fln fma fmb fme fmf fmg fmi fml fmm fmn fna fnb fne fnf fng fni fnl fnm fnn gaa gab gae gaf gag gai gal gam gan gba gbe gbf gbg gbi gbl gbm gbn ge- gea geb gee gef geg gei gel gem gen gfa gfb gfe gff gfi gfl gfm gga ggb ggg ggi ggm ggn gia gib gie gif gig gii gil gim gin gla glb gle glf glg gli gll glm gln gma gmb gme gmf gmg gmi gml gmm gmn gna gnb gne gnf gni gnl gnm gnn i-f ia- iaa iab iae iaf iag iai ial iam ian iba ibb ibe ibf ibg ibi ibl ibm ibn ie- iea iee ief ieg iei iel iem ien ifa ifb ife iff ifg ifi ifl ifm ifn iga igb ige igf igg igi igl igm ign iia iib iie iif iii iil iim iin il- ila ilb ile ilf ilg ili ill ilm iln im- ima imb ime imf img imi iml imm imn in- ina inb ine inf ing ini inl inm inn la- laa lab lae laf lag lai lal lam lan lba lbb lbe lbf lbg lbi lbl lbm lea leb lee lef leg lei lel lem len lfa lfb lfe lff lfg lfi lfl lfm lfn lga lgb lge lgf lgg lgi lgl lgm lgn lia lib lie lif lig lii lil lim lin lla llb lle llf llg lli lll llm lln lma lmb lme lmf lmg lmi lml lmm lmn lna lnb lne lng lni lnl lnm lnn m-f maa mab mae maf mag mai mal mam man mba mbb mbe mbf mbg mbi mbl mbm mea meb mee mef meg mei mel mem men mfa mfb mfe mff mfg mfi mfl mfm mfn mga mgb mge mgf mgi mgl mgm mgn mi- mia mib mie mif mig mii mil mim min mla mlb mle mlf mlg mli mll mlm mln mma mmb mme mmf mmg mmi mml mmm mmn mna mnb mne mnf mng mni mnl mnm mnn n-i naa nab nae naf nag nai nal nam nan nba nbb nbe nbf nbg nbi nbl nbm nbn ne- nea neb nee nef neg nei nel nem nen nfa nfb nfe nff nfi nfl nfn nga ngb nge ngf ngg ngi ngl ngm ngn nia nib nie nif nig nii nil nim nin nla nlb nle nlf nlg nli nll nlm nln nma nmb nme nmg nmi nml nmm nmn nna nnb nne nnf nng nni nnl nnm nnn