a-a a-b a-c a-q a-t aaa aab aac aae aaq aat aau ab- aba abb abc abe abq abt abu ac- aca acb acc ace acq act acu aea aeb aec aee aeq aet aeu aqa aqc aqt at- ata atb atc ate att atu au- aua aub auc aue aut b-u baa bab bac bae baq bat bau bba bbb bbc bbe bbq bbt bbu bca bcb bcc bce bcq bct bcu be- bea beb bec bee beq bet beu bqc bqe bqt bta btb btc bte btq btt btu bua bub buc bue but buu c-- caa cab cac cae caq cat cau cba cbb cbc cbe cbq cbt cbu cca ccb ccc cce cct ccu ce- cea ceb cec cee ceq cet ceu cqa cqb cqc cqt cta ctb ctc cte ctq ctt ctu cua cub cuc cue cuq cut cuu eaa eab eac eae eat eau eba ebb ebc ebe ebq ebt ebu ec- eca ecb ecc ece ecq ect ecu eea eeb eec eee eet eqa eqe eqq eqt equ eta etb etc ete ett etu eu- eua eub euc eue eut qaa qac qat qau qba qbc qbe qbq qca qcc qct qec qee qet qqq qqu qta qtc qtq qu- qua que qut taa tab tac tae taq tat tau tba tbb tbc tbe tbt tbu tca tcb tcc tce tct tcu te- tea teb tec tee teq tet teu tta ttb ttc tte ttt ttu tua tub tuc tue tut tuu ua- uaa uab uac uae uaq uat uau uba ubb ubc ube ubt ubu uca ucb ucc uce uct ucu uea ueb uec uee uet uta utb utc ute utt utu uua uuc uue uut uuu