a-a a-b aaa aab aaj aan aao aav ab- aba abb abj abn abo abv aja ajb ajj ajn ajo an- ana anb anj ann ano anv aoa aob aoj aon aoo aov av- ava avb avn avo baa bab baj ban bao bav bba bbb bbn bbo bja bjj bjn bna bnb bnj bnn bno bnv boa bob boj bon boo bov bva bvb bvn bvo bvv jaa jab jaj jan jao jav jba jbj jbo jja jjb jjj jna jnj jnn jno joa job joj jon joo jvb jvn naa nab naj nan nao nav nba nbb nbn nbo nbv nja njn nna nnb nnn nno nnv no- noa nob noj non noo nov nva nvb nvn nvv oaa oab oaj oan oao oav ob- oba obb obj obn obo obv oja ojb ojo on- ona onb onj onn ono oo- ooa oob oon ooo oov ov- ova ovb ovo ovv v-a vaa vab vaj van vao vav vba vbo vbv vja vn- vna vnj vno vnv voa vob von voo vov vva vvb vvo vvv