-er bbb bbe bbi bbl bbm bbr bbs be- beb bee bei bel bem ber bes bi- bib bie bii bil bim bir bis blb ble bli bll blm blr bls bmb bme bmi bml bmm bmr bms brb bre bri brl brm brr brs bsb bse bsi bsl bsm bsr bss ebb ebe ebi ebl ebm ebr ebs eeb eee eel eem eer ees eib eie eii eil eim eir eis elb ele eli ell elm elr els em- emb eme emi eml emm emr ems erb ere eri erl erm err ers es- esb ese esi esl esm esr ess ibb ibe ibi ibl ibm ibr ibs ie- iee iei iel iem ier ies iib iie iii iil iim iir iis il- ilb ile ili ill ilm ilr ils im- imb ime imi iml imm ims ir- irb ire iri irl irm irr irs is- isb ise isi isl ism isr iss lbb lbe lbi lbl lbm lbr lbs leb lee lei lel lem ler les lib lie lii lil lim lir lis llb lle lli lll llm llr lls lmb lme lmi lml lmm lmr lms lrb lri lrm lrr lrs lsb lse lsi lsl lsm lsr lss m-r mbb mbe mbi mbl mbm mbr mbs meb mee mei mel mem mer mes mi- mib mie mii mil mim mir mis mlb mle mli mll mlm mlr mls mmb mme mmi mml mmm mmr mms mrb mre mri mrl mrm mrr mrs msb mse msi msl msm msr mss rbb rbe rbi rbl rbm rbr rbs re- reb ree rei rel rem rer res rib rie rii ril rim rir ris rle rli rll rlm rlr rls rmb rme rmi rml rmm rmr rms rrb rri rrl rrm rrr rrs rsb rse rsi rsl rsm rsr rss sbb sbe sbi sbl sbm sbr sbs se- seb see sei sel sem ser ses sib sie sii sil sim sir sis slb sle sli sll slm slr sls smb sme smi sml smm smr sms sr- srb sre sri srl srm srr srs ss- ssb sse ssi ssl ssm ssr sss