-al a-a a-b a-c aaa aab aac aae aaj aal aan aau ab- aba abb abc abe abj abl abn abu ac- aca acb acc ace acj acl acn acu aea aeb aec aee aej ael aen aeu aja ajb ajc aje ajj ajl ajn aju al- ala alb alc ale alj all aln alu an- ana anb anc ane anj anl ann anu au- aua aub auc aue auj aul aun b-u baa bab bac bae baj bal ban bau bba bbb bbc bbe bbl bbn bbu bca bcb bcc bce bcj bcl bcn bcu be- bea beb bec bee bel ben beu bja bjc bjj bjn bju bla blb blc ble blj bll bln blu bna bnb bnc bne bnj bnl bnn bnu bua bub buc bue buj bul bun buu c-- c-j caa cab cac cae caj cal can cau cba cbb cbc cbe cbj cbl cbn cbu cca ccb ccc cce ccj ccl ccn ccu ce- cea ceb cec cee cej cel cen ceu cja cjb cjc cl- cla clb clc cle clj cll cln clu cn- cna cnb cnc cne cnj cnl cnn cnu cua cub cuc cue cul cun cuu eaa eab eac eae eaj eal ean eau eba ebb ebc ebe ebj ebl ebn ebu ec- eca ecb ecc ece ecj ecl ecn ecu eea eeb eec eee eel een eja ejc ejl eju ela elb elc ele ell eln elu en- ena enb enc ene enl enn enu eu- eua eub euc eue euj eul eun jaa jab jac jae jaj jal jan jau jba jbc jbj jbl jbu jca jcb jcc jce jcl jcu jea jeb jec jee jej jel jen jeu jja jjb jjc jjj jjl jju jla jlb jlc jle jll jln jlu jna jnc jne jnj jnl jnn jnu jub jue jul jun la- laa lab lac lae laj lal lan lau lba lbb lbc lbe lbj lbl lbu lca lcb lcc lce lcj lcl lcn lcu lea leb lec lee lej lel len leu lje ljj ljn lju lla llb llc lle llj lll lln llu lna lnb lnc lne lnl lnn lnu lua lub luc lue lul lun luu naa nab nac nae naj nal nan nau nba nbb nbc nbe nbl nbn nbu nca ncb ncc nce ncl ncn ncu ne- nea neb nec nee nej nel nen neu nja njc nje njl njn nju nla nlb nlc nle nlj nll nln nlu nna nnb nnc nne nnl nnn nnu nua nub nuc nue nuj nul nun nuu ua- uaa uab uac uae uaj ual uan uau uba ubb ubc ube ubl ubn ubu uca ucb ucc uce ucj ucl ucn ucu uea ueb uec uee uel uen ujc ula ulb ulc ule ull uln ulu un- una unb unc une unl unn unu uua uuc uue uun uuu