a-a a-b aaa aab aag aaj aam aao ab- aba abb abg abj abm abo ag- aga agb agg agj agm ago aja ajb ajj ajm ajo ama amb amg amm amo aoa aob aog aoj aom aoo baa bab bag baj bam bao bba bbb bbg bbm bbo bga bgb bgg bgm bgo bja bjg bjj bjm bma bmb bmg bmj bmm bmo boa bob bog boj bom boo gaa gab gag gaj gam gao gba gbg gbj gbm gbo gga ggb ggg ggj ggm ggo gja gjg gma gmb gmg gmj gmm gmo goa gob gog gom goo jaa jab jag jaj jam jao jba jbg jbj jbm jbo jga jgb jgo jja jjb jjg jjj jma jmb jmj jmm jmo joa job jog joj jom joo m-o maa mab mag maj mam mao mba mbb mbg mbj mbm mbo mga mgb mgj mgm mgo mjb mjj mjm mma mmb mmg mmj mmm mmo moa mob mog mom moo oaa oab oag oaj oam oao ob- oba obb obg obj obm obo oga ogg ogo oja ojb ojm ojo om- oma omb omg omj omm omo oo- ooa oob oog oom ooo