a-a a-b aaa aab aad aaj aan aao ab- aba abb abd abj abn abo ad- ada adb add adj adn ado aja ajb ajd ajj ajn ajo an- ana anb and anj ann ano aoa aob aod aoj aon aoo baa bab bad baj ban bao bba bbb bbd bbn bbo bda bdb bdd bdj bdo bja bjd bjj bjn bna bnb bnd bnj bnn bno boa bob bod boj bon boo daa dab dad daj dan dao dba dbb dbd dbn dbo dda ddb ddd ddn ddo dj- dja djb djd djo dna dnb dnd dnj dnn dno doa dob dod doj don doo j-d jaa jab jad jaj jan jao jba jbj jbo jda jdb jdn jdo jja jjb jjj jna jnd jnj jnn jno joa job jod joj jon joo naa nab nad naj nan nao nba nbb nbd nbn nbo nda ndb ndd ndn ndo nja njn nna nnb nnn nno no- noa nob nod noj non noo oaa oab oad oaj oan oao ob- oba obb obd obj obn obo oda odb odd odn odo oja ojb ojd ojo on- ona onb ond onj onn ono oo- ooa oob ood oon ooo