-ic bbb bbc bbd bbi bbk bbm bbo bcb bcc bcd bci bck bcm bco bdb bdc bdd bdi bdk bdm bdo bi- bib bic bid bii bik bim bio bkb bkc bkk bkm bko bmb bmc bmd bmi bmk bmm bmo bob boc bod boi bok bom boo c-- cbb cbc cbd cbi cbk cbm cbo ccb ccc ccd cci cck ccm cco cdb cdc cdd cdi cdk cdm cdo ci- cib cic cid cii cik cim cio ckb ckc ckd cki ckm cko cmb cmc cmd cmi cmk cmm cmo co- cob coc cod coi cok com coo dbb dbc dbd dbi dbk dbm dbo dcb dcc dcd dci dck dcm dco ddb ddc ddd ddi ddk ddm ddo di- dib dic did dii dik dim dio dkb dkc dki dkk dkm dko dmb dmc dmd dmi dmk dmm dmo dob doc dod doi dok dom doo i-d ibb ibc ibd ibi ibk ibm ibo icb icc icd ici ick icm ico idb idc idd idi idk idm ido iib iic iid iii iim iio ikb ikc iki ikk iko im- imb imc imd imi imm imo io- iob ioc iod ioi iom ioo kbb kbc kbd kbi kbk kbm kbo kcb kcc kcd kci kck kcm kdb kdc kdk kdm kdo kib kic kid kii kik kim kio kkb kkc kki kkk kkm kmb kmc kmd kmi kmk kmm kmo kob koc kod koi kok kom koo m-o mbb mbc mbd mbi mbk mbm mbo mc- mcb mcc mcd mci mck mcm mco mdb mdc mdd mdi mdk mdm mdo mi- mib mic mid mii mik mim mio mkb mkc mkd mkk mkm mko mmb mmc mmd mmi mmk mmm mmo mob moc mod moi mok mom moo o-i ob- obb obc obd obi obk obm obo oc- ocb occ ocd oci ock ocm oco odb odc odd odi odm odo oib oic oid oii oik oim oio okb okc okd oki okk oko om- omb omc omd omi omm omo oo- oob ooc ood ooi ook oom ooo