b-p bbb bbe bbm bbn bbo bbp bbs bbt be- beb bee bem ben beo bep bes bet bmb bme bmm bmn bmo bmp bms bmt bnb bne bnn bno bnp bns bnt bob boe bom bon boo bop bos bot bpb bpe bpm bpn bpo bpp bps bpt bsb bse bsm bsn bso bsp bss bst btb bte btm btn bto btp bts btt ebb ebe ebm ebn ebo ebp ebs ebt eeb eee eem een eeo eep ees eet em- emb eme emm emn emo emp ems emt en- enb ene enm enn eno enp ens ent eo- eob eoe eom eon eoo eop eos eot ep- epb epe epm epn epo epp eps ept es- esb ese esm esn eso esp ess est etb ete etm etn eto etp ets ett m-o mbb mbe mbm mbo mbp mbs mbt meb mee mem men meo mep mes met mmb mme mmm mmn mmo mmp mms mmt mnb mne mnm mnn mno mnp mns mnt mob moe mom mon moo mop mos mot mpb mpe mpm mpn mpo mpp mps mpt msb mse msm msn mso msp mss mst mtb mte mtm mtn mto mtp mts mtt nbb nbe nbm nbn nbo nbp nbs nbt ne- neb nee nem nen neo nep nes net nmb nme nmm nmn nmo nmp nms nmt nnb nne nnm nnn nno nnp nns nnt no- nob noe nom non noo nop nos not npb npe npm npn npo npp nps npt nsb nse nsm nsn nso nsp nss nst ntb nte ntm ntn nto ntp nts ntt ob- obb obe obm obn obo obp obs obt oeb oee oem oen oeo oep oes oet om- omb ome omm omn omo omp oms omt on- onb one onn ono onp ons ont oo- oob oom oon ooo oop oos oot op- opb ope opm opn opo opp ops opt os- osb ose osm osn oso osp oss ost ot- otb ote otm otn oto otp ots ott p-p pbb pbe pbm pbn pbo pbp pbs pbt peb pee pem pen peo pep pes pet pmb pme pmm pmn pmo pmp pms pmt pn- pnb pne pnm pnn pno pnp pns pnt pob poe pom pon poo pop pos pot ppb ppe ppm ppn ppo ppp pps ppt ps- psb pse psm psn pso psp pss pst pt- ptb pte ptm ptn pto ptp pts ptt sbb sbe sbm sbn sbo sbp sbs sbt se- seb see sem sen seo sep ses set smb sme smm smn smo smp sms smt snb sne snm snn sno snp sns snt sob soe som son soo sop sos sot spb spe spm spn spo spp sps spt ss- ssb sse ssm ssn sso ssp sss sst stb ste stm stn sto stp sts stt tbb tbe tbm tbn tbo tbp tbs tbt te- teb tee tem ten teo tep tes tet tmb tme tmm tmn tmo tmp tms tmt tnb tne tnm tnn tno tnp tns tnt to- tob toe tom ton too top tos tot tpb tpe tpm tpn tpo tpp tps tpt tsb tse tsm tsn tso tsp tss tst ttb tte ttm ttn tto ttp tts ttt