-ey b-u bbb bbc bbe bbn bbq bbs bbu bby bcb bcc bce bcn bcq bcs bcu bcy be- beb bec bee ben beq bes beu bey bnb bnc bne bnn bns bnu bqc bqe bsb bsc bse bsn bss bsu bsy bub buc bue bun bus buu buy by- byc bye byn byq bys byu c-- cbb cbc cbe cbn cbq cbs cbu cby ccb ccc cce ccn ccs ccu ce- ceb cec cee cen ceq ces ceu cey cn- cnb cnc cne cnn cns cnu cny cqb cqc cqs csb csc cse csn csq css csu csy cub cuc cue cun cuq cus cuu cuy cyb cyc cye cyn cys ebb ebc ebe ebn ebq ebs ebu eby ec- ecb ecc ece ecn ecq ecs ecu eeb eec eee een ees eey en- enb enc ene enn ens enu eny eqe eqn eqq eqs equ es- esb esc ese esn esq ess esu esy eu- eub euc eue eun eus eyc eye eyn eys nbb nbc nbe nbn nbs nbu ncb ncc nce ncn ncs ncu ne- neb nec nee nen nes neu ney nnb nnc nne nnn nns nnu nqc nqs nsb nsc nse nsn nss nsu nsy nub nuc nue nun nuq nus nuu nuy nyc nye nyn nys nyu nyy qbc qbe qbq qbs qcc qcs qec qee qen qnb qne qns qqq qqu qsc qu- que qus quy sbb sbc sbe sbn sbq sbs sbu sby scb scc sce scn scs scu se- seb sec see sen seq ses seu sey snb snc sne snn sns snu sny sqn sqq sqs ss- ssb ssc sse ssn ssq sss ssu sub suc sue sun suq sus suu suy sy- syb syc sye syn sys syu ubb ubc ube ubn ubs ubu uby ucb ucc uce ucn ucs ucu ueb uec uee uen ues uey un- unb unc une unn unq uns unu uny usb usc use usn uss usu uuc uue uun uus uuu uyc uys uyu ybc ybe ybs yby ycc yce ycs ycu ycy yeb yec yee yen yes yey yne ynn yns ynu yny yqb ysb ysc yse yss ysu ysy yue yun yus yuu yuy yyb yyc yye yys yyu yyy