-al a-a a-b a-c aaa aab aac aae aag aal aam aan ab- aba abb abc abe abg abl abm abn ac- aca acb acc ace acg acl acm acn aea aeb aec aee aeg ael aem aen ag- aga agb agc age agg agl agm agn al- ala alb alc ale alg all alm aln ama amb amc ame amg aml amm amn an- ana anb anc ane ang anl anm ann baa bab bac bae bag bal bam ban bba bbb bbc bbe bbg bbl bbm bbn bca bcb bcc bce bcg bcl bcm bcn be- bea beb bec bee beg bel bem ben bga bgb bgc bge bgg bgl bgm bgn bla blb blc ble blg bll blm bln bma bmb bmc bme bmg bml bmm bmn bna bnb bnc bne bng bnl bnn c-- caa cab cac cae cag cal cam can cba cbb cbc cbe cbg cbl cbm cbn cca ccb ccc cce ccg ccl ccm ccn ce- cea ceb cec cee ceg cel cem cen cga cgb cgc cge cgg cgl cgm cgn cl- cla clb clc cle clg cll clm cln cma cmb cmc cme cmg cml cmm cmn cn- cna cnb cnc cne cng cnl cnm cnn eaa eab eac eae eag eal eam ean eba ebb ebc ebe ebg ebl ebm ebn ec- eca ecb ecc ece ecg ecl ecm ecn eea eeb eec eee eeg eel eem een ega egb egc ege egg egl egm egn ela elb elc ele elg ell elm eln em- ema emb emc eme emg eml emm emn en- ena enb enc ene eng enl enm enn gaa gab gac gae gag gal gam gan gba gbc gbe gbg gbl gbm gbn gca gcb gcc gce gcg gcl gcm gcn ge- gea geb gec gee geg gel gem gen gga ggb ggc ggg ggm ggn gla glb glc gle glg gll glm gln gma gmb gmc gme gmg gml gmm gmn gna gnb gnc gne gnl gnm gnn la- laa lab lac lae lag lal lam lan lba lbb lbc lbe lbg lbl lbm lca lcb lcc lce lcg lcl lcm lcn lea leb lec lee leg lel lem len lga lgb lgc lge lgg lgl lgm lgn lla llb llc lle llg lll llm lln lma lmb lmc lme lmg lml lmm lmn lna lnb lnc lne lng lnl lnm lnn maa mab mac mae mag mal mam man mba mbb mbc mbe mbg mbl mbm mc- mca mcb mcc mce mcg mcl mcm mcn mea meb mec mee meg mel mem men mga mgb mgc mge mgl mgm mgn mla mlb mlc mle mlg mll mlm mln mma mmb mmc mme mmg mml mmm mmn mna mnb mnc mne mng mnl mnm mnn naa nab nac nae nag nal nam nan nba nbb nbc nbe nbg nbl nbm nbn nca ncb ncc nce ncg ncl ncm ncn ne- nea neb nec nee neg nel nem nen nga ngb ngc nge ngg ngl ngm ngn nla nlb nlc nle nlg nll nlm nln nma nmb nmc nme nmg nml nmm nmn nna nnb nnc nne nng nnl nnm nnn