-al a-a a-b a-t aaa aab aae aal aat aav ab- aba abb abe abl abt abv aea aeb aee ael aet aev al- ala alb ale all alt alv at- ata atb ate atl att atv av- ava avb ave avl avt baa bab bae bal bat bav bba bbb bbe bbl bbt be- bea beb bee bel bet bev bla blb ble bll blt blv bta btb bte btl btt btv bva bvb bve bvl bvt bvv eaa eab eae eal eat eav eba ebb ebe ebl ebt ebv eea eeb eee eel eet eev ela elb ele ell elt elv eta etb ete etl ett etv eva evb eve evl evt evv la- laa lab lae lal lat lav lba lbb lbe lbl lbt lbv lea leb lee lel let lev lla llb lle lll llt llv lta ltb lte ltl ltt ltv lva lvb lve lvl lvt lvv taa tab tae tal tat tav tba tbb tbe tbl tbt tbv te- tea teb tee tel tet tev tla tle tll tlt tlv tta ttb tte ttl ttt ttv tva tvb tve tvl tvt v-a v-e vaa vab vae val vat vav vba vbl vbv vea veb vee vel vet vl- vla vlb vle vll vlt vlv vta vtb vte vtl vtt vtv vva vvb vvt vvv