b-p bbb bbe bbi bbm bbo bbp bbs bbt be- beb bee bei bem beo bep bes bet bi- bib bie bii bim bio bip bis bit bmb bme bmi bmm bmo bmp bms bmt bob boe boi bom boo bop bos bot bpb bpe bpi bpm bpo bpp bps bpt bsb bse bsi bsm bso bsp bss bst btb bte bti btm bto btp bts btt ebb ebe ebi ebm ebo ebp ebs ebt eeb eee eem eeo eep ees eet eib eie eii eim eio eip eis eit em- emb eme emi emm emo emp ems emt eo- eob eoe eoi eom eoo eop eos eot ep- epb epe epi epm epo epp eps ept es- esb ese esi esm eso esp ess est etb ete eti etm eto etp ets ett ibb ibe ibi ibm ibo ibp ibs ibt ie- iee iei iem iep ies iet iib iie iii iim iio iip iis iit im- imb ime imi imm imo imp ims imt io- iob ioe ioi iom ioo iop ios iot ipb ipe ipi ipm ipo ipp ips ipt is- isb ise isi ism iso isp iss ist itb ite iti itm ito itp its itt m-o mbb mbe mbi mbm mbo mbp mbs mbt meb mee mei mem meo mep mes met mi- mib mie mii mim mio mip mis mit mmb mme mmi mmm mmo mmp mms mmt mob moe moi mom moo mop mos mot mpb mpe mpi mpm mpo mpp mps mpt msb mse msi msm mso msp mss mst mtb mte mti mtm mto mtp mts mtt o-i ob- obb obe obi obm obo obp obs obt oeb oee oei oem oeo oep oes oet oib oie oii oim oio oip ois oit om- omb ome omi omm omo omp oms omt oo- oob ooi oom ooo oop oos oot op- opb ope opi opm opo opp ops opt os- osb ose osi osm oso osp oss ost ot- otb ote oti otm oto otp ots ott p-p pbb pbe pbi pbm pbo pbp pbs pbt peb pee pei pem peo pep pes pet pib pie pii pim pio pip pis pit pmb pme pmi pmm pmo pmp pms pmt pob poe poi pom poo pop pos pot ppb ppe ppi ppm ppo ppp pps ppt ps- psb pse psi psm pso psp pss pst pt- ptb pte pti ptm pto ptp pts ptt sbb sbe sbi sbm sbo sbp sbs sbt se- seb see sei sem seo sep ses set sib sie sii sim sio sip sis sit smb sme smi smm smo smp sms smt sob soe soi som soo sop sos sot spb spe spi spm spo spp sps spt ss- ssb sse ssi ssm sso ssp sss sst stb ste sti stm sto stp sts stt tbb tbe tbi tbm tbo tbp tbs tbt te- teb tee tei tem teo tep tes tet tib tie tii tim tio tip tis tit tmb tme tmi tmm tmo tmp tms tmt to- tob toe toi tom too top tos tot tpb tpe tpi tpm tpo tpp tps tpt tsb tse tsi tsm tso tsp tss tst ttb tte tti ttm tto ttp tts ttt