-th bbb bbc bbe bbh bbm bbn bbs bbt bcb bcc bce bch bcm bcn bcs bct be- beb bec bee beh bem ben bes bet bhb bhc bhe bhh bhm bhs bht bmb bmc bme bmh bmm bmn bms bmt bnb bnc bne bnn bns bnt bsb bsc bse bsh bsm bsn bss bst btb btc bte bth btm btn bts btt c-- cbb cbc cbe cbh cbm cbn cbs cbt ccb ccc cce cch ccm ccn ccs cct ce- ceb cec cee ceh cem cen ces cet ch- chb chc che chh chm chn chs cht cmb cmc cme cmh cmm cmn cms cmt cn- cnb cnc cne cnh cnm cnn cns cnt csb csc cse csh csm csn css cst ctb ctc cte cth ctm ctn cts ctt ebb ebc ebe ebh ebm ebn ebs ebt ec- ecb ecc ece ech ecm ecn ecs ect eeb eec eee eem een ees eet ehb ehc ehe ehh ehm ehn ehs eht em- emb emc eme emh emm emn ems emt en- enb enc ene enh enm enn ens ent es- esb esc ese esh esm esn ess est etb etc ete eth etm etn ets ett hbb hbc hbe hbh hbm hbn hbs hbt hcb hcc hce hch hcm hcn hcs hct he- heb hec hee heh hem hen hes het hhb hhc hhe hhh hhm hhn hhs hht hmb hmc hme hmh hmm hms hmt hnb hnc hne hnh hnn hns hnt hsb hsc hse hsh hsm hsn hss hst htb htc hte hth htm htn hts htt mbb mbc mbe mbh mbm mbs mbt mc- mcb mcc mce mch mcm mcn mcs mct meb mec mee meh mem men mes met mhc mhh mhm mhn mhs mht mmb mmc mme mmh mmm mmn mms mmt mnb mnc mne mnm mnn mns mnt msb msc mse msh msm msn mss mst mtb mtc mte mth mtm mtn mts mtt nbb nbc nbe nbm nbn nbs nbt ncb ncc nce nch ncm ncn ncs nct ne- neb nec nee neh nem nen nes net nhb nhc nhe nhh nhm nhn nhs nht nmb nmc nme nmh nmm nmn nms nmt nnb nnc nne nnh nnm nnn nns nnt nsb nsc nse nsh nsm nsn nss nst ntb ntc nte nth ntm ntn nts ntt sbb sbc sbe sbh sbm sbn sbs sbt scb scc sce sch scm scn scs sct se- seb sec see seh sem sen ses set sh- shb shc she shh shm shn shs sht smb smc sme smh smm smn sms smt snb snc sne snm snn sns snt ss- ssb ssc sse ssh ssm ssn sss sst stb stc ste sth stm stn sts stt tbb tbc tbe tbh tbm tbn tbs tbt tcb tcc tce tch tcm tcn tcs tct te- teb tec tee teh tem ten tes tet th- thb thc the thh thm thn ths tht tmb tmc tme tmh tmm tmn tms tmt tnb tnc tne tnh tnm tnn tns tnt tsb tsc tse tsh tsm tsn tss tst ttb ttc tte tth ttm ttn tts ttt