a-a a-b aaa aab aah aaj aak aao aau ab- aba abb abh abj abk abo abu aha ahb ahh ahj ahk aho ahu aja ajb ajh ajj ajk ajo aju aka akb akh akj akk ako aku aoa aob aoh aoj aok aoo aou au- aua aub auh auj auk auo b-u baa bab bah baj bak bao bau bba bbb bbh bbk bbo bbu bha bhb bhh bhj bhk bho bhu bja bjj bjk bju bka bkb bkk bko boa bob boh boj bok boo bou bua bub buh buj buk buo buu haa hab hah haj hak hao hau hba hbb hbh hbj hbk hbo hbu hha hhb hhh hhj hhk hho hhu hja hjk hjo hka hkb hkh hkk hko hku hoa hob hoh hok hoo hou hua hub huh huj huk huo huu jaa jab jah jaj jak jao jau jba jbj jbk jbo jbu jha jhj jho jhu jja jjb jjj jjk jju jka jkb jkh jkk jko jku joa job joh joj jok joo jou jub juh juk juo ka- kaa kab kah kaj kak kao kau kba kbb kbh kbk kbo kbu kha khh khj khk kho khu kjb kju kkb kkh kkk kku koa kob koh kok koo kou kub kuh kuj kuk kuu oaa oab oah oaj oak oao oau ob- oba obb obh obj obk obo obu oha ohh oho ohu oja ojb ojo oju oka okb okj okk oko oku oo- ooa oob ooh ook ooo ou- oua ouh ouk ouo ua- uaa uab uah uaj uak uao uau uba ubb ubh ubk ubo ubu uha uhb uhh uhj uho uhu ujo uka ukb ukk uku uoa uob uoj uok uoo uua uuu