bbb bbd bbi bbm bbo bdb bdd bdi bdm bdo bi- bib bid bii bim bio bmb bmd bmi bmm bmo bob bod boi bom boo dbb dbd dbi dbm dbo ddb ddd ddi ddm ddo di- dib did dii dim dio dmb dmd dmi dmm dmo dob dod doi dom doo i-d ibb ibd ibi ibm ibo idb idd idi idm ido iib iid iii iim iio im- imb imd imi imm imo io- iob iod ioi iom ioo m-o mbb mbd mbi mbm mbo mdb mdd mdi mdm mdo mi- mib mid mii mim mio mmb mmd mmi mmm mmo mob mod moi mom moo o-i ob- obb obd obi obm obo odb odd odi odm odo oib oid oii oim oio om- omb omd omi omm omo oo- oob ood ooi oom ooo