-er bbb bbe bbf bbi bbm bbr be- beb bee bef bei bem ber bfb bfe bff bfi bfm bfr bi- bib bie bif bii bim bir bmb bme bmf bmi bmm bmr brb bre brf bri brm brr ebb ebe ebf ebi ebm ebr eeb eee eef eem eer ef- efb efe eff efi efm efr eib eie eif eii eim eir em- emb eme emf emi emm emr erb ere erf eri erm err fbb fbe fbf fbi fbm fbr feb fee fef fei fem fer ffe fff ffi ffm ffr fib fie fif fii fim fir fmb fme fmf fmi fmm fmr frb fre frf fri frm frr i-f ibb ibe ibf ibi ibm ibr ie- iee ief iei iem ier ifb ife iff ifi ifm ifr iib iie iif iii iim iir im- imb ime imf imi imm ir- irb ire irf iri irm irr m-f m-r mbb mbe mbf mbi mbm mbr meb mee mef mei mem mer mfb mfe mff mfi mfm mfr mi- mib mie mif mii mim mir mmb mme mmf mmi mmm mmr mrb mre mrf mri mrm mrr rbb rbe rbf rbi rbm rbr re- reb ree ref rei rem rer rfb rfe rff rfi rfm rfr rib rie rif rii rim rir rmb rme rmf rmi rmm rmr rrb rrf rri rrm rrr