a-a a-b a-q aaa aab aan aao aaq aau ab- aba abb abn abo abq abu an- ana anb ann ano anq anu aoa aob aon aoo aou aqa aqn aqo au- aua aub aun auo b-u baa bab ban bao baq bau bba bbb bbn bbo bbq bbu bna bnb bnn bno bnu boa bob bon boo boq bou bua bub bun buo buu naa nab nan nao nau nba nbb nbn nbo nbu nna nnb nnn nno nnu no- noa nob non noo nou nua nub nun nuo nuq nuu oaa oab oan oao oaq oau ob- oba obb obn obo obu on- ona onb onn ono onu oo- ooa oob oon ooo oqb oqo ou- oua oun ouo qaa qan qau qba qbq qnb qoo qqq qqu qu- qua quo ua- uaa uab uan uao uaq uau uba ubb ubn ubo ubu un- una unb unn uno unq unu uoa uob uon uoo uua uun uuu