a-a a-b a-t aaa aab aad aag aao aat ab- aba abb abd abg abo abt ad- ada adb add adg ado adt ag- aga agb agd agg ago agt aoa aob aod aog aoo aot at- ata atb atd atg ato att baa bab bad bag bao bat bba bbb bbd bbg bbo bbt bda bdb bdd bdg bdo bdt bga bgb bgd bgg bgo bgt boa bob bod bog boo bot bta btb btd btg bto btt daa dab dad dag dao dat dba dbb dbd dbg dbo dbt dda ddb ddd ddg ddo ddt dga dgd dgg dgt doa dob dod dog doo dot dta dtb dtd dtg dto dtt g-d gaa gab gad gag gao gat gba gbd gbg gbo gbt gda gdb gdd gdo gdt gga ggb ggd ggg ggo ggt goa gob god gog goo got gta gtb gtd gtg gto gtt oaa oab oad oag oao oat ob- oba obb obd obg obo obt oda odb odd odg odo odt oga ogd ogg ogo ogt oo- ooa oob ood oog ooo oot ot- ota otb otd otg oto ott taa tab tad tag tao tat tba tbb tbd tbg tbo tbt tda tdb tdd tdg tdo tdt tga tgb tgg tgo tgt to- toa tob tod tog too tot tta ttb ttd ttg tto ttt