-al a-a a-b aaa aab aae aal aan aau aav ab- aba abb abe abl abn abu abv aea aeb aee ael aen aeu aev al- ala alb ale all aln alu alv an- ana anb ane anl ann anu anv au- aua aub aue aul aun auv av- ava avb ave avl avn avu b-u baa bab bae bal ban bau bav bba bbb bbe bbl bbn bbu be- bea beb bee bel ben beu bev bla blb ble bll bln blu blv bna bnb bne bnl bnn bnu bnv bua bub bue bul bun buu bva bvb bve bvl bvn bvu bvv eaa eab eae eal ean eau eav eba ebb ebe ebl ebn ebu ebv eea eeb eee eel een eev ela elb ele ell eln elu elv en- ena enb ene enl enn enu env eu- eua eub eue eul eun euv eva evb eve evl evn evv la- laa lab lae lal lan lau lav lba lbb lbe lbl lbu lbv lea leb lee lel len leu lev lla llb lle lll lln llu llv lna lnb lne lnl lnn lnu lua lub lue lul lun luu luv lva lvb lve lvl lvn lvv naa nab nae nal nan nau nav nba nbb nbe nbl nbn nbu nbv ne- nea neb nee nel nen neu nev nla nlb nle nll nln nlu nlv nna nnb nne nnl nnn nnu nnv nua nub nue nul nun nuu nuv nva nvb nve nvl nvn nvu nvv ua- uaa uab uae ual uan uau uav uba ubb ube ubl ubn ubu ubv uea ueb uee uel uen ula ulb ule ull uln ulu ulv un- una unb une unl unn unu unv uua uue uun uuu uva uvb uve uvl uvu uvv v-a v-e vaa vab vae val van vau vav vba vbl vbv vea veb vee vel ven veu vl- vla vlb vle vll vlv vn- vna vnl vnu vnv vue vul vuv vva vvb vvv