-al a-a a-b a-t aaa aab aae aag aal aan aat aav ab- aba abb abe abg abl abn abt abv aea aeb aee aeg ael aen aet aev ag- aga agb age agg agl agn agt agv al- ala alb ale alg all aln alt alv an- ana anb ane ang anl ann ant anv at- ata atb ate atg atl atn att atv av- ava avb ave avg avl avn avt baa bab bae bag bal ban bat bav bba bbb bbe bbg bbl bbn bbt be- bea beb bee beg bel ben bet bev bga bgb bge bgg bgl bgn bgt bgv bla blb ble blg bll bln blt blv bna bnb bne bng bnl bnn bnt bnv bta btb bte btg btl btn btt btv bva bvb bve bvg bvl bvn bvt bvv eaa eab eae eag eal ean eat eav eba ebb ebe ebg ebl ebn ebt ebv eea eeb eee eeg eel een eet eev ega egb ege egg egl egn egt ela elb ele elg ell eln elt elv en- ena enb ene eng enl enn ent env eta etb ete etg etl etn ett etv eva evb eve evg evl evn evt evv gaa gab gae gag gal gan gat gav gba gbe gbg gbl gbn gbt gbv ge- gea geb gee geg gel gen get gev gga ggb ggg ggn ggt ggv gla glb gle glg gll gln glt glv gna gnb gne gnl gnn gnt gnv gta gtb gte gtg gtl gtn gtt gtv gva gvb gve gvg gvl gvn gvt la- laa lab lae lag lal lan lat lav lba lbb lbe lbg lbl lbt lbv lea leb lee leg lel len let lev lga lgb lge lgg lgl lgn lgt lgv lla llb lle llg lll lln llt llv lna lnb lne lng lnl lnn lnt lta ltb lte ltg ltl ltt ltv lva lvb lve lvg lvl lvn lvt lvv naa nab nae nag nal nan nat nav nba nbb nbe nbg nbl nbn nbt nbv ne- nea neb nee neg nel nen net nev nga ngb nge ngg ngl ngn ngt nla nlb nle nlg nll nln nlt nlv nna nnb nne nng nnl nnn nnt nnv nta ntb nte ntg ntn ntt ntv nva nvb nve nvg nvl nvn nvt nvv taa tab tae tag tal tan tat tav tba tbb tbe tbg tbl tbn tbt tbv te- tea teb tee teg tel ten tet tev tga tgb tge tgg tgl tgn tgt tgv tla tle tlg tll tln tlt tlv tna tnb tne tng tnl tnn tnt tta ttb tte ttg ttl ttn ttt ttv tva tvb tve tvg tvl tvn tvt v-a v-e vaa vab vae vag val van vat vav vba vbg vbl vbv vea veb vee veg vel ven vet vga vgg vgl vgn vgt vl- vla vlb vle vll vlt vlv vn- vna vng vnl vnv vta vtb vte vtg vtl vtt vtv vva vvb vvg vvt vvv