a-a a-b a-c a-q aaa aab aac aae aaq aau ab- aba abb abc abe abq abu ac- aca acb acc ace acq acu aea aeb aec aee aeq aeu aqa aqc au- aua aub auc aue b-u baa bab bac bae baq bau bba bbb bbc bbe bbq bbu bca bcb bcc bce bcq bcu be- bea beb bec bee beq beu bqc bqe bua bub buc bue buu c-- caa cab cac cae caq cau cba cbb cbc cbe cbq cbu cca ccb ccc cce ccu ce- cea ceb cec cee ceq ceu cqa cqb cqc cua cub cuc cue cuq cuu eaa eab eac eae eau eba ebb ebc ebe ebq ebu ec- eca ecb ecc ece ecq ecu eea eeb eec eee eqa eqe eqq equ eu- eua eub euc eue qaa qac qau qba qbc qbe qbq qca qcc qec qee qqq qqu qu- qua que ua- uaa uab uac uae uaq uau uba ubb ubc ube ubu uca ucb ucc uce ucu uea ueb uec uee uua uuc uue uuu