-ic bbb bbc bbf bbi bbk bbm bbo bcb bcc bcf bci bck bcm bco bfb bfc bff bfi bfm bfo bi- bib bic bif bii bik bim bio bkb bkc bkf bkk bkm bko bmb bmc bmf bmi bmk bmm bmo bob boc bof boi bok bom boo c-- cbb cbc cbf cbi cbk cbm cbo ccb ccc ccf cci cck ccm cco cfb cfc cff cfi cfk cfm cfo ci- cib cic cif cii cik cim cio ckb ckc cki ckm cko cmb cmc cmf cmi cmk cmm cmo co- cob coc cof coi cok com coo fbb fbc fbf fbi fbk fbm fbo fcb fcc fcf fci fck fcm fco ffc fff ffi ffk ffm ffo fib fic fif fii fik fim fkb fkc fkf fki fkk fkm fmb fmc fmf fmi fmm fmo fob foc fof foi fok fom foo i-f ibb ibc ibf ibi ibk ibm ibo icb icc icf ici ick icm ico ifb ifc iff ifi ifm ifo iib iic iif iii iim iio ikb ikc ikf iki ikk iko im- imb imc imf imi imm imo io- iob ioc iof ioi iom ioo kbb kbc kbf kbi kbk kbm kbo kcb kcc kci kck kcm kfc kff kfi kfm kfo kib kic kif kii kik kim kio kkb kkc kki kkk kkm kmb kmc kmf kmi kmk kmm kmo kob koc kof koi kok kom koo m-f m-o mbb mbc mbf mbi mbk mbm mbo mc- mcb mcc mcf mci mck mcm mco mfb mfc mff mfi mfm mfo mi- mib mic mif mii mik mim mio mkb mkc mkk mkm mko mmb mmc mmf mmi mmk mmm mmo mob moc mof moi mok mom moo o-i ob- obb obc obf obi obk obm obo oc- ocb occ ocf oci ock ocm oco of- ofb ofc off ofi ofm ofo oib oic oif oii oik oim oio okb okc oki okk oko om- omb omc omf omi omm omo oo- oob ooc oof ooi ook oom ooo