-ol c-- ccc ccd cck ccl cco ccu cdc cdd cdk cdl cdo cdu ckc ckd cko cl- clc cld clk cll clo clu co- coc cod cok col coo cou cuc cud cuk cul cuo cuu dcc dcd dck dcl dco dcu ddc ddd ddk ddl ddo ddu dkc dkk dkl dko dku dl- dlc dld dlk dll dlo dlu doc dod dok dol doo dou duc dud duk dul duo kcc kcd kck kcl kcu kdc kdk kdl kdo kdu kkc kkk kkl kku kl- klc kld klo klu koc kod kok kol koo kou kuc kud kuk kul kuu lcc lcd lck lcl lco lcu ldc ldd ldk ldl ldo ldu lkl llc lld llk lll llo llu loc lod lok lol loo lou luc lud luk lul luo luu oc- occ ocd ock ocl oco ocu odc odd odl odo odu okc okd okk okl oko oku olc old olk oll olo olu oo- ooc ood ook ool ooo ou- ouc oud ouk oul ouo ucc ucd uck ucl uco ucu udc udd udk udl udo udu ukc ukk ukl uku ulc uld ulk ull ulo ulu uoc uod uok uol uoo uuc uuu