-al a-a a-b a-t aaa aab aae aag aal aam aat ab- aba abb abe abg abl abm abt aea aeb aee aeg ael aem aet ag- aga agb age agg agl agm agt al- ala alb ale alg all alm alt ama amb ame amg aml amm amt at- ata atb ate atg atl atm att baa bab bae bag bal bam bat bba bbb bbe bbg bbl bbm bbt be- bea beb bee beg bel bem bet bga bgb bge bgg bgl bgm bgt bla blb ble blg bll blm blt bma bmb bme bmg bml bmm bmt bta btb bte btg btl btm btt eaa eab eae eag eal eam eat eba ebb ebe ebg ebl ebm ebt eea eeb eee eeg eel eem eet ega egb ege egg egl egm egt ela elb ele elg ell elm elt em- ema emb eme emg eml emm emt eta etb ete etg etl etm ett gaa gab gae gag gal gam gat gba gbe gbg gbl gbm gbt ge- gea geb gee geg gel gem get gga ggb ggg ggm ggt gla glb gle glg gll glm glt gma gmb gme gmg gml gmm gmt gta gtb gte gtg gtl gtm gtt la- laa lab lae lag lal lam lat lba lbb lbe lbg lbl lbm lbt lea leb lee leg lel lem let lga lgb lge lgg lgl lgm lgt lla llb lle llg lll llm llt lma lmb lme lmg lml lmm lmt lta ltb lte ltg ltl ltm ltt maa mab mae mag mal mam mat mba mbb mbe mbg mbl mbm mbt mea meb mee meg mel mem met mga mgb mge mgl mgm mgt mla mlb mle mlg mll mlm mlt mma mmb mme mmg mml mmm mmt mta mtb mte mtg mtl mtm mtt taa tab tae tag tal tam tat tba tbb tbe tbg tbl tbm tbt te- tea teb tee teg tel tem tet tga tgb tge tgg tgl tgm tgt tla tle tlg tll tlm tlt tma tmb tme tmg tml tmm tmt tta ttb tte ttg ttl ttm ttt