a-a a-b aaa aab aag aah aaj aan aao ab- aba abb abg abh abj abn abo ag- aga agb agg agh agj agn ago aha ahb ahg ahh ahj ahn aho aja ajb ajh ajj ajn ajo an- ana anb ang anh anj ann ano aoa aob aog aoh aoj aon aoo baa bab bag bah baj ban bao bba bbb bbg bbh bbn bbo bga bgb bgg bgh bgn bgo bha bhb bhg bhh bhj bho bja bjg bjj bjn bna bnb bng bnj bnn bno boa bob bog boh boj bon boo gaa gab gag gah gaj gan gao gba gbg gbh gbj gbn gbo gga ggb ggg ggh ggj ggn ggo gha ghb ghg ghh ghj ghn gho gja gjg gna gnb gnn gno goa gob gog goh gon goo haa hab hag hah haj han hao hba hbb hbg hbh hbj hbn hbo hga hgb hgg hgh hgn hgo hha hhb hhg hhh hhj hhn hho hja hjn hjo hna hnb hng hnh hnj hnn hno hoa hob hog hoh hon hoo jaa jab jag jah jaj jan jao jba jbg jbj jbo jga jgb jgh jgn jgo jha jhj jhn jho jja jjb jjg jjj jna jng jnh jnj jnn jno joa job jog joh joj jon joo naa nab nag nah naj nan nao nba nbb nbg nbn nbo nga ngb ngg ngh ngj ngn ngo nha nhb nhg nhh nhj nhn nja njn nna nnb nng nnh nnn nno no- noa nob nog noh noj non noo oaa oab oag oah oaj oan oao ob- oba obb obg obh obj obn obo oga ogg ogh ogn ogo oha ohg ohh ohn oho oja ojb ojo on- ona onb ong onh onj onn ono oo- ooa oob oog ooh oon ooo