-al a-a a-b a-t aaa aab aae aal aan aat aau aax ab- aba abb abe abl abn abt abu abx aea aeb aee ael aen aet aeu aex al- ala alb ale all aln alt alu alx an- ana anb ane anl ann ant anu anx at- ata atb ate atl atn att atu atx au- aua aub aue aul aun aut aux ax- axa axe axl axn axt axx b-u baa bab bae bal ban bat bau bax bba bbb bbe bbl bbn bbt bbu bbx be- bea beb bee bel ben bet beu bex bla blb ble bll bln blt blu blx bna bnb bne bnl bnn bnt bnu bnx bta btb bte btl btn btt btu btx bua bub bue bul bun but buu bux bxb bxl bxn bxx eaa eab eae eal ean eat eau eax eba ebb ebe ebl ebn ebt ebu ebx eea eeb eee eel een eet eex ela elb ele ell eln elt elu elx en- ena enb ene enl enn ent enu eta etb ete etl etn ett etu etx eu- eua eub eue eul eun eut eux ex- exa exe exl ext exu exx la- laa lab lae lal lan lat lau lax lba lbb lbe lbl lbt lbu lbx lea leb lee lel len let leu lex lla llb lle lll lln llt llu lna lnb lne lnl lnn lnt lnu lta ltb lte ltl ltt ltu ltx lua lub lue lul lun lut luu lux lxx naa nab nae nal nan nat nau nax nba nbb nbe nbl nbn nbt nbu nbx ne- nea neb nee nel nen net neu nex nla nlb nle nll nln nlt nlu nlx nna nnb nne nnl nnn nnt nnu nta ntb nte ntn ntt ntu ntx nua nub nue nul nun nut nuu nux nxl nxt t-x taa tab tae tal tan tat tau tax tba tbb tbe tbl tbn tbt tbu te- tea teb tee tel ten tet teu tex tla tle tll tln tlt tlu tlx tna tnb tne tnl tnn tnt tnx tta ttb tte ttl ttn ttt ttu ttx tua tub tue tul tun tut tuu tux txe txl txn txt txu ua- uaa uab uae ual uan uat uau uba ubb ube ubl ubn ubt ubu ubx uea ueb uee uel uen uet ula ulb ule ull uln ult ulu un- una unb une unl unn unt unu unx uta utb ute utl utn utt utu utx uua uue uun uut uuu uxb uxt uxu xaa xal xan xat xau xbe xbl xbx xee xel xen xet xeu xex xla xlb xlt xna xnu xtx xue xul xun xxl xxx