a-a a-b a-t aaa aab aag aaj aao aat ab- aba abb abg abj abo abt ag- aga agb agg agj ago agt aja ajb ajj ajo ajt aoa aob aog aoj aoo aot at- ata atb atg ato att baa bab bag baj bao bat bba bbb bbg bbo bbt bga bgb bgg bgo bgt bja bjg bjj bjt boa bob bog boj boo bot bta btb btg bto btt gaa gab gag gaj gao gat gba gbg gbj gbo gbt gga ggb ggg ggj ggo ggt gja gjg gjt goa gob gog goo got gta gtb gtg gto gtt jaa jab jag jaj jao jat jba jbg jbj jbo jbt jga jgb jgo jgt jja jjb jjg jjj joa job jog joj joo jot jta jtb jtg jtt oaa oab oag oaj oao oat ob- oba obb obg obj obo obt oga ogg ogo ogt oja ojb ojo oo- ooa oob oog ooo oot ot- ota otb otg oto ott taa tab tag taj tao tat tba tbb tbg tbj tbo tbt tga tgb tgg tgo tgt tjo to- toa tob tog toj too tot tta ttb ttg tto ttt