-ic bbb bbc bbd bbi bbm bbo bcb bcc bcd bci bcm bco bdb bdc bdd bdi bdm bdo bi- bib bic bid bii bim bio bmb bmc bmd bmi bmm bmo bob boc bod boi bom boo c-- cbb cbc cbd cbi cbm cbo ccb ccc ccd cci ccm cco cdb cdc cdd cdi cdm cdo ci- cib cic cid cii cim cio cmb cmc cmd cmi cmm cmo co- cob coc cod coi com coo dbb dbc dbd dbi dbm dbo dcb dcc dcd dci dcm dco ddb ddc ddd ddi ddm ddo di- dib dic did dii dim dio dmb dmc dmd dmi dmm dmo dob doc dod doi dom doo i-d ibb ibc ibd ibi ibm ibo icb icc icd ici icm ico idb idc idd idi idm ido iib iic iid iii iim iio im- imb imc imd imi imm imo io- iob ioc iod ioi iom ioo m-o mbb mbc mbd mbi mbm mbo mc- mcb mcc mcd mci mcm mco mdb mdc mdd mdi mdm mdo mi- mib mic mid mii mim mio mmb mmc mmd mmi mmm mmo mob moc mod moi mom moo o-i ob- obb obc obd obi obm obo oc- ocb occ ocd oci ocm oco odb odc odd odi odm odo oib oic oid oii oim oio om- omb omc omd omi omm omo oo- oob ooc ood ooi oom ooo