a-a a-b a-c a-t aaa aab aac aae aaj aan aat aau ab- aba abb abc abe abj abn abt abu ac- aca acb acc ace acj acn act acu aea aeb aec aee aej aen aet aeu aja ajb ajc aje ajj ajn ajt aju an- ana anb anc ane anj ann ant anu at- ata atb atc ate atn att atu au- aua aub auc aue auj aun aut b-u baa bab bac bae baj ban bat bau bba bbb bbc bbe bbn bbt bbu bca bcb bcc bce bcj bcn bct bcu be- bea beb bec bee ben bet beu bja bjc bjj bjn bjt bju bna bnb bnc bne bnj bnn bnt bnu bta btb btc bte btn btt btu bua bub buc bue buj bun but buu c-- c-j caa cab cac cae caj can cat cau cba cbb cbc cbe cbj cbn cbt cbu cca ccb ccc cce ccj ccn cct ccu ce- cea ceb cec cee cej cen cet ceu cja cjb cjc cn- cna cnb cnc cne cnj cnn cnt cnu cta ctb ctc cte ctn ctt ctu cua cub cuc cue cun cut cuu eaa eab eac eae eaj ean eat eau eba ebb ebc ebe ebj ebn ebt ebu ec- eca ecb ecc ece ecj ecn ect ecu eea eeb eec eee een eet eja ejc ejt eju en- ena enb enc ene enn ent enu eta etb etc ete etj etn ett etu eu- eua eub euc eue euj eun eut jaa jab jac jae jaj jan jat jau jba jbc jbj jbt jbu jca jcb jcc jce jct jcu jea jeb jec jee jej jen jet jeu jja jjb jjc jjj jju jna jnc jne jnj jnn jnt jnu jta jtb jtc jte jtn jtt jtu jub jue jun jut naa nab nac nae naj nan nat nau nba nbb nbc nbe nbn nbt nbu nca ncb ncc nce ncn nct ncu ne- nea neb nec nee nej nen net neu nja njc nje njn nju nna nnb nnc nne nnn nnt nnu nta ntb ntc nte ntn ntt ntu nua nub nuc nue nuj nun nut nuu taa tab tac tae taj tan tat tau tba tbb tbc tbe tbj tbn tbt tbu tca tcb tcc tce tcj tcn tct tcu te- tea teb tec tee tej ten tet teu tjc tje tju tna tnb tnc tne tnn tnt tta ttb ttc tte ttn ttt ttu tua tub tuc tue tuj tun tut tuu ua- uaa uab uac uae uaj uan uat uau uba ubb ubc ube ubn ubt ubu uca ucb ucc uce ucj ucn uct ucu uea ueb uec uee uen uet ujc un- una unb unc une unn unt unu uta utb utc ute utj utn utt utu uua uuc uue uun uut uuu