a-a a-b aaa aab aaj aam aan aao ab- aba abb abj abm abn abo aja ajb ajj ajm ajn ajo ama amb amm amn amo an- ana anb anj anm ann ano aoa aob aoj aom aon aoo baa bab baj bam ban bao bba bbb bbm bbn bbo bja bjj bjm bjn bma bmb bmj bmm bmn bmo bna bnb bnj bnn bno boa bob boj bom bon boo jaa jab jaj jam jan jao jba jbj jbm jbo jja jjb jjj jma jmb jmj jmm jmn jmo jna jnj jnn jno joa job joj jom jon joo m-o maa mab maj mam man mao mba mbb mbj mbm mbo mjb mjj mjm mma mmb mmj mmm mmn mmo mna mnb mnj mnm mnn mno moa mob mom mon moo naa nab naj nam nan nao nba nbb nbm nbn nbo nja njm njn nma nmb nmm nmn nmo nna nnb nnm nnn nno no- noa nob noj nom non noo oaa oab oaj oam oan oao ob- oba obb obj obm obn obo oja ojb ojm ojo om- oma omb omj omm omn omo on- ona onb onj onn ono oo- ooa oob oom oon ooo