-al a-a a-b a-t aaa aab aae aaf aal aam aan aat ab- aba abb abe abf abl abm abn abt aea aeb aee aef ael aem aen aet af- afa afb afe aff afl afm afn aft al- ala alb ale alf all alm aln alt ama amb ame amf aml amm amn amt an- ana anb ane anf anl anm ann ant at- ata atb ate atf atl atm atn att baa bab bae baf bal bam ban bat bba bbb bbe bbf bbl bbm bbn bbt be- bea beb bee bef bel bem ben bet bfa bfb bfe bff bfl bfm bfn bft bla blb ble blf bll blm bln blt bma bmb bme bmf bml bmm bmn bmt bna bnb bne bnf bnl bnn bnt bta btb bte btf btl btm btn btt eaa eab eae eaf eal eam ean eat eba ebb ebe ebf ebl ebm ebn ebt eea eeb eee eef eel eem een eet ef- efa efb efe eff efl efm eft ela elb ele elf ell elm eln elt em- ema emb eme emf eml emm emn emt en- ena enb ene enf enl enm enn ent eta etb ete etf etl etm etn ett faa fab fae faf fal fam fan fat fba fbb fbe fbf fbl fbm fbn fbt fea feb fee fef fel fem fen fet ffa ffe fff ffl ffm ffn fft fla flb fle flf fll flm fln flt fma fmb fme fmf fml fmm fmn fmt fna fnb fne fnf fnl fnm fnn fnt fta ftb fte ftf ftl ftm ftn ftt la- laa lab lae laf lal lam lan lat lba lbb lbe lbf lbl lbm lbt lea leb lee lef lel lem len let lfa lfb lfe lff lfl lfm lfn lft lla llb lle llf lll llm lln llt lma lmb lme lmf lml lmm lmn lmt lna lnb lne lnl lnm lnn lnt lta ltb lte ltf ltl ltm ltt m-f maa mab mae maf mal mam man mat mba mbb mbe mbf mbl mbm mbt mea meb mee mef mel mem men met mfa mfb mfe mff mfl mfm mfn mft mla mlb mle mlf mll mlm mln mlt mma mmb mme mmf mml mmm mmn mmt mna mnb mne mnf mnl mnm mnn mnt mta mtb mte mtf mtl mtm mtn mtt naa nab nae naf nal nam nan nat nba nbb nbe nbf nbl nbm nbn nbt ne- nea neb nee nef nel nem nen net nfa nfb nfe nff nfl nfn nft nla nlb nle nlf nll nlm nln nlt nma nmb nme nml nmm nmn nmt nna nnb nne nnf nnl nnm nnn nnt nta ntb nte ntf ntm ntn ntt taa tab tae taf tal tam tan tat tba tbb tbe tbf tbl tbm tbn tbt te- tea teb tee tef tel tem ten tet tfa tfb tfe tff tfl tfm tfn tft tla tle tlf tll tlm tln tlt tma tmb tme tmf tml tmm tmn tmt tna tnb tne tnf tnl tnm tnn tnt tta ttb tte ttf ttl ttm ttn ttt