-ic -ol bbb bbc bbf bbi bbk bbl bbm bbo bcb bcc bcf bci bck bcl bcm bco bfb bfc bff bfi bfl bfm bfo bi- bib bic bif bii bik bil bim bio bkb bkc bkf bkk bkl bkm bko blb blc blf bli blk bll blm blo bmb bmc bmf bmi bmk bml bmm bmo bob boc bof boi bok bol bom boo c-- cbb cbc cbf cbi cbk cbl cbm cbo ccb ccc ccf cci cck ccl ccm cco cfb cfc cff cfi cfk cfl cfm cfo ci- cib cic cif cii cik cil cim cio ckb ckc cki ckm cko cl- clb clc clf cli clk cll clm clo cmb cmc cmf cmi cmk cml cmm cmo co- cob coc cof coi cok col com coo fbb fbc fbf fbi fbk fbl fbm fbo fcb fcc fcf fci fck fcl fcm fco ffc fff ffi ffk ffl ffm ffo fib fic fif fii fik fil fim fkb fkc fkf fki fkk fkl fkm flb flc flf fli fll flm flo fmb fmc fmf fmi fml fmm fmo fob foc fof foi fok fol fom foo i-f ibb ibc ibf ibi ibk ibl ibm ibo icb icc icf ici ick icl icm ico ifb ifc iff ifi ifl ifm ifo iib iic iif iii iil iim iio ikb ikc ikf iki ikk ikl iko il- ilb ilc ilf ili ilk ill ilm ilo im- imb imc imf imi iml imm imo io- iob ioc iof ioi iol iom ioo kbb kbc kbf kbi kbk kbl kbm kbo kcb kcc kci kck kcl kcm kfc kff kfi kfm kfo kib kic kif kii kik kil kim kio kkb kkc kki kkk kkl kkm kl- klb klc klf kli klm klo kmb kmc kmf kmi kmk kml kmm kmo kob koc kof koi kok kol kom koo lbb lbc lbf lbi lbk lbl lbm lbo lcb lcc lcf lci lck lcl lcm lco lfb lfc lff lfi lfk lfl lfm lfo lib lic lif lii lik lil lim lio lkb lkl llb llc llf lli llk lll llm llo lmb lmc lmf lmi lmk lml lmm lmo lob loc lof loi lok lol lom loo m-f m-o mbb mbc mbf mbi mbk mbl mbm mbo mc- mcb mcc mcf mci mck mcl mcm mco mfb mfc mff mfi mfl mfm mfo mi- mib mic mif mii mik mil mim mio mkb mkc mkk mkl mkm mko mlb mlc mlf mli mlk mll mlm mlo mmb mmc mmf mmi mmk mml mmm mmo mob moc mof moi mok mol mom moo o-i ob- obb obc obf obi obk obl obm obo oc- ocb occ ocf oci ock ocl ocm oco of- ofb ofc off ofi ofl ofm ofo oib oic oif oii oik oil oim oio okb okc oki okk okl oko olb olc olf oli olk oll olm olo om- omb omc omf omi oml omm omo oo- oob ooc oof ooi ook ool oom ooo