a-a a-b a-t aaa aab aad aag aan aao aat ab- aba abb abd abg abn abo abt ad- ada adb add adg adn ado adt ag- aga agb agd agg agn ago agt an- ana anb and ang ann ano ant aoa aob aod aog aon aoo aot at- ata atb atd atg atn ato att baa bab bad bag ban bao bat bba bbb bbd bbg bbn bbo bbt bda bdb bdd bdg bdo bdt bga bgb bgd bgg bgn bgo bgt bna bnb bnd bng bnn bno bnt boa bob bod bog bon boo bot bta btb btd btg btn bto btt daa dab dad dag dan dao dat dba dbb dbd dbg dbn dbo dbt dda ddb ddd ddg ddn ddo ddt dga dgd dgg dgn dgt dna dnb dnd dng dnn dno dnt doa dob dod dog don doo dot dta dtb dtd dtg dtn dto dtt g-d gaa gab gad gag gan gao gat gba gbd gbg gbn gbo gbt gda gdb gdd gdn gdo gdt gga ggb ggd ggg ggn ggo ggt gna gnb gnd gnn gno gnt goa gob god gog gon goo got gta gtb gtd gtg gtn gto gtt naa nab nad nag nan nao nat nba nbb nbd nbg nbn nbo nbt nda ndb ndd ndg ndn ndo ndt nga ngb ngd ngg ngn ngo ngt nna nnb nng nnn nno nnt no- noa nob nod nog non noo not nta ntb ntd ntg ntn nto ntt oaa oab oad oag oan oao oat ob- oba obb obd obg obn obo obt oda odb odd odg odn odo odt oga ogd ogg ogn ogo ogt on- ona onb ond ong onn ono ont oo- ooa oob ood oog oon ooo oot ot- ota otb otd otg otn oto ott taa tab tad tag tan tao tat tba tbb tbd tbg tbn tbo tbt tda tdb tdd tdg tdn tdo tdt tga tgb tgg tgn tgo tgt tna tnb tnd tng tnn tno tnt to- toa tob tod tog ton too tot tta ttb ttd ttg ttn tto ttt