-er b-p bbb bbd bbe bbi bbm bbp bbr bbs bdb bdd bde bdi bdm bdp bdr bds be- beb bed bee bei bem bep ber bes bi- bib bid bie bii bim bip bir bis bmb bmd bme bmi bmm bmp bmr bms bpb bpd bpe bpi bpm bpp bpr bps brb brd bre bri brm brp brr brs bsb bsd bse bsi bsm bsp bsr bss dbb dbd dbe dbi dbm dbp dbr dbs ddb ddd dde ddi ddm ddp ddr dds de- deb ded dee dei dem dep der des di- dib did die dii dim dip dir dis dmb dmd dme dmi dmm dmp dmr dms dpb dpd dpe dpi dpm dpp dpr dps drb drd dre dri drm drp drr drs dsb dsd dse dsi dsm dsp dsr dss ebb ebd ebe ebi ebm ebp ebr ebs ed- edb edd ede edi edm edp edr eds eeb eed eee eem eep eer ees eib eid eie eii eim eip eir eis em- emb emd eme emi emm emp emr ems ep- epb epd epe epi epm epp epr eps erb erd ere eri erm erp err ers es- esb esd ese esi esm esp esr ess i-d ibb ibd ibe ibi ibm ibp ibr ibs idb idd ide idi idm idp idr ids ie- ied iee iei iem iep ier ies iib iid iie iii iim iip iir iis im- imb imd ime imi imm imp ims ipb ipd ipe ipi ipm ipp ipr ips ir- irb ird ire iri irm irp irr irs is- isb isd ise isi ism isp isr iss m-r mbb mbd mbe mbi mbm mbp mbr mbs mdb mdd mde mdi mdm mdp mdr mds meb med mee mei mem mep mer mes mi- mib mid mie mii mim mip mir mis mmb mmd mme mmi mmm mmp mmr mms mpb mpd mpe mpi mpm mpp mpr mps mrb mrd mre mri mrm mrp mrr mrs msb msd mse msi msm msp msr mss p-p pbb pbd pbe pbi pbm pbp pbr pbs pdb pdd pde pdi pdm pdp pdr pds peb ped pee pei pem pep per pes pib pid pie pii pim pip pir pis pmb pmd pme pmi pmm pmp pmr pms ppb ppd ppe ppi ppm ppp ppr pps prb prd pre pri prm prp prr prs ps- psb psd pse psi psm psp psr pss rbb rbd rbe rbi rbm rbp rbr rbs rdb rdd rde rdi rdm rdp rdr rds re- reb red ree rei rem rep rer res rib rid rie rii rim rip rir ris rmb rmd rme rmi rmm rmp rmr rms rpb rpd rpe rpi rpm rpp rpr rps rrb rrd rri rrm rrp rrr rrs rsb rsd rse rsi rsm rsp rsr rss sbb sbd sbe sbi sbm sbp sbr sbs sdb sdd sde sdi sdm sdp sdr sds se- seb sed see sei sem sep ser ses sib sid sie sii sim sip sir sis smb smd sme smi smm smp smr sms spb spd spe spi spm spp spr sps sr- srb srd sre sri srm srp srr srs ss- ssb ssd sse ssi ssm ssp ssr sss