a-a a-b a-q aaa aab aae aam aaq aas ab- aba abb abe abm abq abs aea aeb aee aem aeq aes ama amb ame amm amq ams aqa aqm aqs as- asa asb ase asm asq ass baa bab bae bam baq bas bba bbb bbe bbm bbq bbs be- bea beb bee bem beq bes bma bmb bme bmm bmq bms bqe bsa bsb bse bsm bss eaa eab eae eam eas eba ebb ebe ebm ebq ebs eea eeb eee eem ees em- ema emb eme emm ems eqa eqe eqq eqs es- esa esb ese esm esq ess maa mab mae mam mas mba mbb mbe mbm mbq mbs mea meb mee mem meq mes mma mmb mme mmm mms mqa mqb msa msb mse msm msq mss qaa qam qas qba qbe qbq qbs qee qem qma qme qms qqq qsa qsm saa sab sae sam saq sas sba sbb sbe sbm sbq sbs se- sea seb see sem seq ses sma smb sme smm sms sqa sqm sqq sqs ss- ssa ssb sse ssm ssq sss