-er b-p bbb bbe bbi bbl bbm bbn bbp bbr bbs be- beb bee bei bel bem ben bep ber bes bi- bib bie bii bil bim bin bip bir bis blb ble bli bll blm bln blp blr bls bmb bme bmi bml bmm bmn bmp bmr bms bnb bne bni bnl bnn bnp bnr bns bpb bpe bpi bpl bpm bpn bpp bpr bps brb bre bri brl brm brn brp brr brs bsb bse bsi bsl bsm bsn bsp bsr bss ebb ebe ebi ebl ebm ebn ebp ebr ebs eeb eee eel eem een eep eer ees eib eie eii eil eim ein eip eir eis elb ele eli ell elm eln elp elr els em- emb eme emi eml emm emn emp emr ems en- enb ene eni enl enm enn enp enr ens ep- epb epe epi epl epm epn epp epr eps erb ere eri erl erm ern erp err ers es- esb ese esi esl esm esn esp esr ess ibb ibe ibi ibl ibm ibn ibp ibr ibs ie- iee iei iel iem ien iep ier ies iib iie iii iil iim iin iip iir iis il- ilb ile ili ill ilm iln ilp ilr ils im- imb ime imi iml imm imn imp ims in- inb ine ini inl inm inn inp inr ins ipb ipe ipi ipl ipm ipn ipp ipr ips ir- irb ire iri irl irm irn irp irr irs is- isb ise isi isl ism isn isp isr iss l-p lbb lbe lbi lbl lbm lbp lbr lbs leb lee lei lel lem len lep ler les lib lie lii lil lim lin lip lir lis llb lle lli lll llm lln llp llr lls lmb lme lmi lml lmm lmn lmp lmr lms lnb lne lni lnl lnm lnn lnp lnr lns lpb lpe lpi lpl lpm lpn lpp lpr lps lrb lri lrm lrn lrp lrr lrs lsb lse lsi lsl lsm lsn lsp lsr lss m-r mbb mbe mbi mbl mbm mbp mbr mbs meb mee mei mel mem men mep mer mes mi- mib mie mii mil mim min mip mir mis mlb mle mli mll mlm mln mlp mlr mls mmb mme mmi mml mmm mmn mmp mmr mms mnb mne mni mnl mnm mnn mnp mnr mns mpb mpe mpi mpl mpm mpn mpp mpr mps mrb mre mri mrl mrm mrn mrp mrr mrs msb mse msi msl msm msn msp msr mss n-i nbb nbe nbi nbl nbm nbn nbp nbr nbs ne- neb nee nei nel nem nen nep ner nes nib nie nii nil nim nin nip nir nis nlb nle nli nll nlm nln nlp nlr nls nmb nme nmi nml nmm nmn nmp nmr nms nnb nne nni nnl nnm nnn nnp nns npb npe npi npl npm npn npp npr nps nrb nre nri nrl nrm nrn nrp nrr nrs nsb nse nsi nsl nsm nsn nsp nsr nss p-p pbb pbe pbi pbl pbm pbn pbp pbr pbs peb pee pei pel pem pen pep per pes pib pie pii pil pim pin pip pir pis plb ple pli pll plm pln plp plr pls pmb pme pmi pml pmm pmn pmp pmr pms pn- pnb pne pni pnl pnm pnn pnp pnr pns ppb ppe ppi ppl ppm ppn ppp ppr pps prb pre pri prl prm prn prp prr prs ps- psb pse psi psl psm psn psp psr pss rbb rbe rbi rbl rbm rbn rbp rbr rbs re- reb ree rei rel rem ren rep rer res rib rie rii ril rim rin rip rir ris rle rli rll rlm rln rlp rlr rls rmb rme rmi rml rmm rmn rmp rmr rms rnb rni rnm rnn rnp rnr rns rpb rpe rpi rpl rpm rpn rpp rpr rps rrb rri rrl rrm rrn rrp rrr rrs rsb rse rsi rsl rsm rsn rsp rsr rss sbb sbe sbi sbl sbm sbn sbp sbr sbs se- seb see sei sel sem sen sep ser ses sib sie sii sil sim sin sip sir sis slb sle sli sll slm sln slp slr sls smb sme smi sml smm smn smp smr sms snb sne sni snl snm snn snp snr sns spb spe spi spl spm spn spp spr sps sr- srb sre sri srl srm srn srp srr srs ss- ssb sse ssi ssl ssm ssn ssp ssr sss