-er b-p bbb bbe bbi bbl bbm bbp bbr bbs be- beb bee bei bel bem bep ber bes bi- bib bie bii bil bim bip bir bis blb ble bli bll blm blp blr bls bmb bme bmi bml bmm bmp bmr bms bpb bpe bpi bpl bpm bpp bpr bps brb bre bri brl brm brp brr brs bsb bse bsi bsl bsm bsp bsr bss ebb ebe ebi ebl ebm ebp ebr ebs eeb eee eel eem eep eer ees eib eie eii eil eim eip eir eis elb ele eli ell elm elp elr els em- emb eme emi eml emm emp emr ems ep- epb epe epi epl epm epp epr eps erb ere eri erl erm erp err ers es- esb ese esi esl esm esp esr ess ibb ibe ibi ibl ibm ibp ibr ibs ie- iee iei iel iem iep ier ies iib iie iii iil iim iip iir iis il- ilb ile ili ill ilm ilp ilr ils im- imb ime imi iml imm imp ims ipb ipe ipi ipl ipm ipp ipr ips ir- irb ire iri irl irm irp irr irs is- isb ise isi isl ism isp isr iss l-p lbb lbe lbi lbl lbm lbp lbr lbs leb lee lei lel lem lep ler les lib lie lii lil lim lip lir lis llb lle lli lll llm llp llr lls lmb lme lmi lml lmm lmp lmr lms lpb lpe lpi lpl lpm lpp lpr lps lrb lri lrm lrp lrr lrs lsb lse lsi lsl lsm lsp lsr lss m-r mbb mbe mbi mbl mbm mbp mbr mbs meb mee mei mel mem mep mer mes mi- mib mie mii mil mim mip mir mis mlb mle mli mll mlm mlp mlr mls mmb mme mmi mml mmm mmp mmr mms mpb mpe mpi mpl mpm mpp mpr mps mrb mre mri mrl mrm mrp mrr mrs msb mse msi msl msm msp msr mss p-p pbb pbe pbi pbl pbm pbp pbr pbs peb pee pei pel pem pep per pes pib pie pii pil pim pip pir pis plb ple pli pll plm plp plr pls pmb pme pmi pml pmm pmp pmr pms ppb ppe ppi ppl ppm ppp ppr pps prb pre pri prl prm prp prr prs ps- psb pse psi psl psm psp psr pss rbb rbe rbi rbl rbm rbp rbr rbs re- reb ree rei rel rem rep rer res rib rie rii ril rim rip rir ris rle rli rll rlm rlp rlr rls rmb rme rmi rml rmm rmp rmr rms rpb rpe rpi rpl rpm rpp rpr rps rrb rri rrl rrm rrp rrr rrs rsb rse rsi rsl rsm rsp rsr rss sbb sbe sbi sbl sbm sbp sbr sbs se- seb see sei sel sem sep ser ses sib sie sii sil sim sip sir sis slb sle sli sll slm slp slr sls smb sme smi sml smm smp smr sms spb spe spi spl spm spp spr sps sr- srb sre sri srl srm srp srr srs ss- ssb sse ssi ssl ssm ssp ssr sss