-al a-a a-b a-t aaa aab aad aae aag aal aat ab- aba abb abd abe abg abl abt ad- ada adb add ade adg adl adt aea aeb aed aee aeg ael aet ag- aga agb agd age agg agl agt al- ala alb ald ale alg all alt at- ata atb atd ate atg atl att baa bab bad bae bag bal bat bba bbb bbd bbe bbg bbl bbt bda bdb bdd bde bdg bdl bdt be- bea beb bed bee beg bel bet bga bgb bgd bge bgg bgl bgt bla blb bld ble blg bll blt bta btb btd bte btg btl btt daa dab dad dae dag dal dat dba dbb dbd dbe dbg dbl dbt dda ddb ddd dde ddg ddl ddt de- dea deb ded dee deg del det dga dgd dge dgg dgl dgt dl- dla dlb dld dle dlg dll dlt dta dtb dtd dte dtg dtl dtt eaa eab ead eae eag eal eat eba ebb ebd ebe ebg ebl ebt ed- eda edb edd ede edg edl edt eea eeb eed eee eeg eel eet ega egb egd ege egg egl egt ela elb eld ele elg ell elt eta etb etd ete etg etl ett g-d gaa gab gad gae gag gal gat gba gbd gbe gbg gbl gbt gda gdb gdd gde gdl gdt ge- gea geb ged gee geg gel get gga ggb ggd ggg ggt gla glb gld gle glg gll glt gta gtb gtd gte gtg gtl gtt la- laa lab lad lae lag lal lat lba lbb lbd lbe lbg lbl lbt lda ldb ldd lde ldg ldl ldt lea leb led lee leg lel let lga lgb lgd lge lgg lgl lgt lla llb lld lle llg lll llt lta ltb ltd lte ltg ltl ltt taa tab tad tae tag tal tat tba tbb tbd tbe tbg tbl tbt tda tdb tdd tde tdg tdl tdt te- tea teb ted tee teg tel tet tga tgb tge tgg tgl tgt tla tld tle tlg tll tlt tta ttb ttd tte ttg ttl ttt