-er bbb bbd bbe bbi bbk bbm bbo bbr bdb bdd bde bdi bdk bdm bdo bdr be- beb bed bee bei bek bem beo ber bi- bib bid bie bii bik bim bio bir bkb bke bkk bkm bko bkr bmb bmd bme bmi bmk bmm bmo bmr bob bod boe boi bok bom boo bor brb brd bre bri brk brm bro brr dbb dbd dbe dbi dbk dbm dbo dbr ddb ddd dde ddi ddk ddm ddo ddr de- deb ded dee dei dek dem deo der di- dib did die dii dik dim dio dir dkb dke dki dkk dkm dko dkr dmb dmd dme dmi dmk dmm dmo dmr dob dod doe doi dok dom doo dor drb drd dre dri drk drm dro drr ebb ebd ebe ebi ebk ebm ebo ebr ed- edb edd ede edi edk edm edo edr eeb eed eee eek eem eeo eer eib eid eie eii eik eim eio eir ekb ekd eke eki eko ekr em- emb emd eme emi emk emm emo emr eo- eob eod eoe eoi eok eom eoo eor erb erd ere eri erk erm ero err i-d ibb ibd ibe ibi ibk ibm ibo ibr idb idd ide idi idk idm ido idr ie- ied iee iei iek iem ier iib iid iie iii iim iio iir ikb ike iki ikk iko ikr im- imb imd ime imi imm imo io- iob iod ioe ioi iom ioo ior ir- irb ird ire iri irk irm iro irr kbb kbd kbe kbi kbk kbm kbo kbr kdb kde kdk kdm kdo kdr ke- keb ked kee kei kek kem keo ker kib kid kie kii kik kim kio kir kkb kke kki kkk kkm kkr kmb kmd kme kmi kmk kmm kmo kob kod koe koi kok kom koo kor krd kri krk kro krr m-o m-r mbb mbd mbe mbi mbk mbm mbo mbr mdb mdd mde mdi mdk mdm mdo mdr meb med mee mei mek mem meo mer mi- mib mid mie mii mik mim mio mir mkb mkd mke mkk mkm mko mkr mmb mmd mme mmi mmk mmm mmo mmr mob mod moe moi mok mom moo mor mrb mrd mre mri mrk mrm mro mrr o-i ob- obb obd obe obi obk obm obo obr odb odd ode odi odm odo odr oeb oed oee oei oem oeo oer oib oid oie oii oik oim oio oir okb okd oke oki okk oko okr om- omb omd ome omi omm omo omr oo- oob ood ooi ook oom ooo oor or- orb ord ore ori ork orm oro orr rbb rbd rbe rbi rbk rbm rbo rbr rdb rdd rde rdi rdm rdo rdr re- reb red ree rei rek rem reo rer rib rid rie rii rik rim rio rir rkb rke rkk rkm rko rmb rmd rme rmi rmm rmo rmr rob rod roe roi rok rom roo ror rrb rrd rri rrk rrm rrr