a-a a-b a-c a-q aaa aab aac aae aan aaq aas aau ab- aba abb abc abe abn abq abs abu ac- aca acb acc ace acn acq acs acu aea aeb aec aee aen aeq aes aeu an- ana anb anc ane ann anq ans anu aqa aqc aqn aqs as- asa asb asc ase asn asq ass asu au- aua aub auc aue aun aus b-u baa bab bac bae ban baq bas bau bba bbb bbc bbe bbn bbq bbs bbu bca bcb bcc bce bcn bcq bcs bcu be- bea beb bec bee ben beq bes beu bna bnb bnc bne bnn bns bnu bqc bqe bsa bsb bsc bse bsn bss bsu bua bub buc bue bun bus buu c-- caa cab cac cae can caq cas cau cba cbb cbc cbe cbn cbq cbs cbu cca ccb ccc cce ccn ccs ccu ce- cea ceb cec cee cen ceq ces ceu cn- cna cnb cnc cne cnn cns cnu cqa cqb cqc cqs csa csb csc cse csn csq css csu cua cub cuc cue cun cuq cus cuu eaa eab eac eae ean eas eau eba ebb ebc ebe ebn ebq ebs ebu ec- eca ecb ecc ece ecn ecq ecs ecu eea eeb eec eee een ees en- ena enb enc ene enn ens enu eqa eqe eqn eqq eqs equ es- esa esb esc ese esn esq ess esu eu- eua eub euc eue eun eus naa nab nac nae nan nas nau nba nbb nbc nbe nbn nbs nbu nca ncb ncc nce ncn ncs ncu ne- nea neb nec nee nen nes neu nna nnb nnc nne nnn nns nnu nqc nqs nsa nsb nsc nse nsn nss nsu nua nub nuc nue nun nuq nus nuu qaa qac qan qas qau qba qbc qbe qbq qbs qca qcc qcs qec qee qen qnb qne qns qqq qqu qsa qsc qu- qua que qus saa sab sac sae san saq sas sau sba sbb sbc sbe sbn sbq sbs sbu sca scb scc sce scn scs scu se- sea seb sec see sen seq ses seu sna snb snc sne snn sns snu sqa sqn sqq sqs ss- ssa ssb ssc sse ssn ssq sss ssu sua sub suc sue sun suq sus suu ua- uaa uab uac uae uan uaq uas uau uba ubb ubc ube ubn ubs ubu uca ucb ucc uce ucn ucs ucu uea ueb uec uee uen ues un- una unb unc une unn unq uns unu usa usb usc use usn uss usu uua uuc uue uun uus uuu