a-a a-b a-q a-t aaa aab aan aao aaq aat aau ab- aba abb abn abo abq abt abu an- ana anb ann ano anq ant anu aoa aob aon aoo aot aou aqa aqn aqo aqt at- ata atb atn ato att atu au- aua aub aun auo aut b-u baa bab ban bao baq bat bau bba bbb bbn bbo bbq bbt bbu bna bnb bnn bno bnt bnu boa bob bon boo boq bot bou bqt bta btb btn bto btq btt btu bua bub bun buo but buu naa nab nan nao nat nau nba nbb nbn nbo nbt nbu nna nnb nnn nno nnt nnu no- noa nob non noo not nou nqt nta ntb ntn nto ntq ntt ntu nua nub nun nuo nuq nut nuu oaa oab oan oao oaq oat oau ob- oba obb obn obo obt obu on- ona onb onn ono ont onu oo- ooa oob oon ooo oot oqb oqo ot- ota otb otn oto ott otu ou- oua oun ouo out qaa qan qat qau qba qbq qnb qoo qqq qqu qta qto qtq qu- qua quo qut taa tab tan tao taq tat tau tba tbb tbn tbo tbt tbu tna tnb tnn tno tnq tnt to- toa tob ton too toq tot tou tqo tta ttb ttn tto ttt ttu tua tub tun tuo tut tuu ua- uaa uab uan uao uaq uat uau uba ubb ubn ubo ubt ubu un- una unb unn uno unq unt unu uoa uob uon uoo uot uta utb utn uto utt utu uua uun uut uuu