-al a-a a-b a-c a-t aaa aab aac aad aae aag aal aan aat ab- aba abb abc abd abe abg abl abn abt ac- aca acb acc acd ace acg acl acn act ad- ada adb adc add ade adg adl adn adt aea aeb aec aed aee aeg ael aen aet ag- aga agb agc agd age agg agl agn agt al- ala alb alc ald ale alg all aln alt an- ana anb anc and ane ang anl ann ant at- ata atb atc atd ate atg atl atn att baa bab bac bad bae bag bal ban bat bba bbb bbc bbd bbe bbg bbl bbn bbt bca bcb bcc bcd bce bcg bcl bcn bct bda bdb bdc bdd bde bdg bdl bdt be- bea beb bec bed bee beg bel ben bet bga bgb bgc bgd bge bgg bgl bgn bgt bla blb blc bld ble blg bll bln blt bna bnb bnc bnd bne bng bnl bnn bnt bta btb btc btd bte btg btl btn btt c-- caa cab cac cad cae cag cal can cat cba cbb cbc cbd cbe cbg cbl cbn cbt cca ccb ccc ccd cce ccg ccl ccn cct cda cdb cdc cdd cde cdg cdl cdn cdt ce- cea ceb cec ced cee ceg cel cen cet cga cgb cgc cgd cge cgg cgl cgn cgt cl- cla clb clc cld cle clg cll cln clt cn- cna cnb cnc cnd cne cng cnl cnn cnt cta ctb ctc ctd cte ctg ctl ctn ctt daa dab dac dad dae dag dal dan dat dba dbb dbc dbd dbe dbg dbl dbn dbt dca dcb dcc dcd dce dcg dcl dcn dct dda ddb ddc ddd dde ddg ddl ddn ddt de- dea deb dec ded dee deg del den det dga dgc dgd dge dgg dgl dgn dgt dl- dla dlb dlc dld dle dlg dll dlt dna dnb dnc dnd dne dng dnl dnn dnt dta dtb dtc dtd dte dtg dtl dtn dtt eaa eab eac ead eae eag eal ean eat eba ebb ebc ebd ebe ebg ebl ebn ebt ec- eca ecb ecc ecd ece ecg ecl ecn ect ed- eda edb edc edd ede edg edl edn edt eea eeb eec eed eee eeg eel een eet ega egb egc egd ege egg egl egn egt ela elb elc eld ele elg ell eln elt en- ena enb enc end ene eng enl enn ent eta etb etc etd ete etg etl etn ett g-d gaa gab gac gad gae gag gal gan gat gba gbc gbd gbe gbg gbl gbn gbt gca gcb gcc gcd gce gcg gcl gcn gct gda gdb gdc gdd gde gdl gdn gdt ge- gea geb gec ged gee geg gel gen get gga ggb ggc ggd ggg ggn ggt gla glb glc gld gle glg gll gln glt gna gnb gnc gnd gne gnl gnn gnt gta gtb gtc gtd gte gtg gtl gtn gtt la- laa lab lac lad lae lag lal lan lat lba lbb lbc lbd lbe lbg lbl lbt lca lcb lcc lcd lce lcg lcl lcn lct lda ldb ldc ldd lde ldg ldl ldn ldt lea leb lec led lee leg lel len let lga lgb lgc lgd lge lgg lgl lgn lgt lla llb llc lld lle llg lll lln llt lna lnb lnc lnd lne lng lnl lnn lnt lta ltb ltc ltd lte ltg ltl ltt naa nab nac nad nae nag nal nan nat nba nbb nbc nbd nbe nbg nbl nbn nbt nca ncb ncc ncd nce ncg ncl ncn nct nda ndb ndc ndd nde ndg ndl ndn ndt ne- nea neb nec ned nee neg nel nen net nga ngb ngc ngd nge ngg ngl ngn ngt nla nlb nlc nld nle nlg nll nln nlt nna nnb nnc nne nng nnl nnn nnt nta ntb ntc ntd nte ntg ntn ntt taa tab tac tad tae tag tal tan tat tba tbb tbc tbd tbe tbg tbl tbn tbt tca tcb tcc tcd tce tcg tcl tcn tct tda tdb tdc tdd tde tdg tdl tdn tdt te- tea teb tec ted tee teg tel ten tet tga tgb tgc tge tgg tgl tgn tgt tla tlc tld tle tlg tll tln tlt tna tnb tnc tnd tne tng tnl tnn tnt tta ttb ttc ttd tte ttg ttl ttn ttt