a-a a-b a-t aaa aab aaj aao aat aay ab- aba abb abj abo abt aby aja ajb ajj ajo ajt ajy aoa aob aoj aoo aot at- ata atb ato att ay- aya ayo ayt baa bab baj bao bat bay bba bbb bbo bbt bby bja bjj bjt boa bob boj boo bot boy bta btb bto btt bty by- bya byj byo byt jaa jab jaj jao jat jay jba jbj jbo jbt jja jjb jjj jjy joa job joj joo jot joy jta jtb jtt jty jyj oaa oab oaj oao oat ob- oba obb obj obo obt oby oja ojb ojo ojy oo- ooa oob ooo oot ot- ota otb oto ott oya oyo taa tab taj tao tat tay tba tbb tbj tbo tbt tjo to- toa tob toj too tot toy tta ttb tto ttt tty tya tyo tyt yaa yab yao yat yay yby yob yoj yoo yot yoy yta yto ytt yyb yyt yyy