-er b-p bbb bbc bbd bbe bbm bbo bbp bbr bbs bcb bcc bcd bce bcm bco bcp bcr bcs bdb bdc bdd bde bdm bdo bdp bdr bds be- beb bec bed bee bem beo bep ber bes bmb bmc bmd bme bmm bmo bmp bmr bms bob boc bod boe bom boo bop bor bos bpb bpc bpd bpe bpm bpo bpp bpr bps brb brd bre brm bro brp brr brs bsb bsc bsd bse bsm bso bsp bsr bss c-- cbb cbc cbd cbe cbm cbo cbp cbr cbs ccb ccc ccd cce ccm cco ccp ccr ccs cdb cdc cdd cde cdm cdo cdp cdr cds ce- ceb cec ced cee cem ceo cep cer ces cmb cmc cmd cme cmm cmo cmp cmr cms co- cob coc cod coe com coo cop cor cos cpb cpc cpd cpe cpm cpo cpp cpr cps crb crc crd cre crm cro crp crr crs csb csc csd cse csm cso csp csr css dbb dbc dbd dbe dbm dbo dbp dbr dbs dcb dcc dcd dce dcm dco dcp dcr dcs ddb ddc ddd dde ddm ddo ddp ddr dds de- deb dec ded dee dem deo dep der des dmb dmc dmd dme dmm dmo dmp dmr dms dob doc dod doe dom doo dop dor dos dpb dpc dpd dpe dpm dpo dpp dpr dps drb drc drd dre drm dro drp drr drs dsb dsc dsd dse dsm dso dsp dsr dss ebb ebc ebd ebe ebm ebo ebp ebr ebs ec- ecb ecc ecd ece ecm eco ecr ecs ed- edb edc edd ede edm edo edp edr eds eeb eec eed eee eem eeo eep eer ees em- emb emc emd eme emm emo emp emr ems eo- eob eoc eod eoe eom eoo eop eor eos ep- epb epc epd epe epm epo epp epr eps erb erc erd ere erm ero erp err ers es- esb esc esd ese esm eso esp esr ess m-o m-r mbb mbc mbd mbe mbm mbo mbp mbr mbs mc- mcb mcc mcd mce mcm mco mcp mcr mcs mdb mdc mdd mde mdm mdo mdp mdr mds meb mec med mee mem meo mep mer mes mmb mmc mmd mme mmm mmo mmp mmr mms mob moc mod moe mom moo mop mor mos mpb mpc mpd mpe mpm mpo mpp mpr mps mrb mrc mrd mre mrm mro mrp mrr mrs msb msc msd mse msm mso msp msr mss ob- obb obc obd obe obm obo obp obr obs oc- ocb occ ocd ocm oco ocp ocr ocs odb odc odd ode odm odo odp odr ods oeb oec oed oee oem oeo oep oer oes om- omb omc omd ome omm omo omp omr oms oo- oob ooc ood oom ooo oop oor oos op- opb opc opd ope opm opo opp opr ops or- orb orc ord ore orm oro orp orr ors os- osb osc osd ose osm oso osp osr oss p-p pbb pbc pbd pbe pbm pbo pbp pbr pbs pcb pcc pcd pce pcm pco pcp pcr pcs pdb pdc pdd pde pdm pdo pdp pdr pds peb pec ped pee pem peo pep per pes pmb pmc pmd pme pmm pmo pmp pmr pms pob poc pod poe pom poo pop por pos ppb ppc ppd ppe ppm ppo ppp ppr pps prb prc prd pre prm pro prp prr prs ps- psb psc psd pse psm pso psp psr pss rbb rbc rbd rbe rbm rbo rbp rbr rbs rcb rcc rcd rce rcm rco rcp rcr rcs rdb rdc rdd rde rdm rdo rdp rdr rds re- reb rec red ree rem reo rep rer res rmb rmc rmd rme rmm rmo rmp rmr rms rob roc rod roe rom roo rop ror ros rpb rpc rpd rpe rpm rpo rpp rpr rps rrb rrc rrd rrm rrp rrr rrs rsb rsc rsd rse rsm rso rsp rsr rss sbb sbc sbd sbe sbm sbo sbp sbr sbs scb scc scd sce scm sco scp scr scs sdb sdc sdd sde sdm sdo sdp sdr sds se- seb sec sed see sem seo sep ser ses smb smc smd sme smm smo smp smr sms sob soc sod soe som soo sop sor sos spb spc spd spe spm spo spp spr sps sr- srb src srd sre srm sro srp srr srs ss- ssb ssc ssd sse ssm sso ssp ssr sss