-er bbb bbe bbi bbk bbm bbr be- beb bee bei bek bem ber bi- bib bie bii bik bim bir bkb bke bkk bkm bkr bmb bme bmi bmk bmm bmr brb bre bri brk brm brr ebb ebe ebi ebk ebm ebr eeb eee eek eem eer eib eie eii eik eim eir ekb eke eki ekr em- emb eme emi emk emm emr erb ere eri erk erm err ibb ibe ibi ibk ibm ibr ie- iee iei iek iem ier iib iie iii iim iir ikb ike iki ikk ikr im- imb ime imi imm ir- irb ire iri irk irm irr kbb kbe kbi kbk kbm kbr ke- keb kee kei kek kem ker kib kie kii kik kim kir kkb kke kki kkk kkm kkr kmb kme kmi kmk kmm kri krk krr m-r mbb mbe mbi mbk mbm mbr meb mee mei mek mem mer mi- mib mie mii mik mim mir mkb mke mkk mkm mkr mmb mme mmi mmk mmm mmr mrb mre mri mrk mrm mrr rbb rbe rbi rbk rbm rbr re- reb ree rei rek rem rer rib rie rii rik rim rir rkb rke rkk rkm rmb rme rmi rmm rmr rrb rri rrk rrm rrr