-al a-a a-b a-c a-t aaa aab aac aae aal aan aat aau ab- aba abb abc abe abl abn abt abu ac- aca acb acc ace acl acn act acu aea aeb aec aee ael aen aet aeu al- ala alb alc ale all aln alt alu an- ana anb anc ane anl ann ant anu at- ata atb atc ate atl atn att atu au- aua aub auc aue aul aun aut b-u baa bab bac bae bal ban bat bau bba bbb bbc bbe bbl bbn bbt bbu bca bcb bcc bce bcl bcn bct bcu be- bea beb bec bee bel ben bet beu bla blb blc ble bll bln blt blu bna bnb bnc bne bnl bnn bnt bnu bta btb btc bte btl btn btt btu bua bub buc bue bul bun but buu c-- caa cab cac cae cal can cat cau cba cbb cbc cbe cbl cbn cbt cbu cca ccb ccc cce ccl ccn cct ccu ce- cea ceb cec cee cel cen cet ceu cl- cla clb clc cle cll cln clt clu cn- cna cnb cnc cne cnl cnn cnt cnu cta ctb ctc cte ctl ctn ctt ctu cua cub cuc cue cul cun cut cuu eaa eab eac eae eal ean eat eau eba ebb ebc ebe ebl ebn ebt ebu ec- eca ecb ecc ece ecl ecn ect ecu eea eeb eec eee eel een eet ela elb elc ele ell eln elt elu en- ena enb enc ene enl enn ent enu eta etb etc ete etl etn ett etu eu- eua eub euc eue eul eun eut la- laa lab lac lae lal lan lat lau lba lbb lbc lbe lbl lbt lbu lca lcb lcc lce lcl lcn lct lcu lea leb lec lee lel len let leu lla llb llc lle lll lln llt llu lna lnb lnc lne lnl lnn lnt lnu lta ltb ltc lte ltl ltt ltu lua lub luc lue lul lun lut luu naa nab nac nae nal nan nat nau nba nbb nbc nbe nbl nbn nbt nbu nca ncb ncc nce ncl ncn nct ncu ne- nea neb nec nee nel nen net neu nla nlb nlc nle nll nln nlt nlu nna nnb nnc nne nnl nnn nnt nnu nta ntb ntc nte ntn ntt ntu nua nub nuc nue nul nun nut nuu taa tab tac tae tal tan tat tau tba tbb tbc tbe tbl tbn tbt tbu tca tcb tcc tce tcl tcn tct tcu te- tea teb tec tee tel ten tet teu tla tlc tle tll tln tlt tlu tna tnb tnc tne tnl tnn tnt tta ttb ttc tte ttl ttn ttt ttu tua tub tuc tue tul tun tut tuu ua- uaa uab uac uae ual uan uat uau uba ubb ubc ube ubl ubn ubt ubu uca ucb ucc uce ucl ucn uct ucu uea ueb uec uee uel uen uet ula ulb ulc ule ull uln ult ulu un- una unb unc une unl unn unt unu uta utb utc ute utl utn utt utu uua uuc uue uun uut uuu