-al a-a a-b aaa aab aae aag aak aal aan ab- aba abb abe abg abk abl abn aea aeb aee aeg aek ael aen ag- aga agb age agg agk agl agn aka akb ake akg akk akl akn al- ala alb ale alg alk all aln an- ana anb ane ang ank anl ann baa bab bae bag bak bal ban bba bbb bbe bbg bbk bbl bbn be- bea beb bee beg bek bel ben bga bgb bge bgg bgk bgl bgn bka bkb bke bkg bkk bkl bkn bla blb ble blg blk bll bln bna bnb bne bng bnk bnl bnn eaa eab eae eag eak eal ean eba ebb ebe ebg ebk ebl ebn eea eeb eee eeg eek eel een ega egb ege egg egl egn eka ekb eke ekg ekl ela elb ele elg elk ell eln en- ena enb ene eng enk enl enn gaa gab gae gag gak gal gan gba gbe gbg gbk gbl gbn ge- gea geb gee geg gek gel gen gga ggb ggg ggn gka gkb gkn gla glb gle glg glk gll gln gna gnb gne gnl gnn ka- kaa kab kae kag kak kal kan kba kbb kbe kbk kbl kbn ke- kea keb kee keg kek kel ken kga kgb kgl kkb kke kkk kkl kkn kl- kla klb klg kn- kna kne kng knk knl knn la- laa lab lae lag lak lal lan lba lbb lbe lbg lbk lbl lea leb lee leg lek lel len lga lgb lge lgg lgk lgl lgn lka lkb lkg lkl lla llb lle llg llk lll lln lna lnb lne lng lnk lnl lnn naa nab nae nag nak nal nan nba nbb nbe nbg nbk nbl nbn ne- nea neb nee neg nek nel nen nga ngb nge ngg ngk ngl ngn nka nke nkk nkn nla nlb nle nlg nlk nll nln nna nnb nne nng nnk nnl nnn