-up c-- ccc cce ccf cco ccp ccu ce- cec cee cef ceo cep ceu cfc cfe cff cfo cfp cfu co- coc coe cof coo cop cou cpc cpe cpf cpo cpp cpu cuc cue cuf cuo cup cuu ec- ecc ece ecf eco ecu eec eee eef eeo eep ef- efc efe eff efo efp eo- eoc eoe eof eoo eop eou ep- epc epe epf epo epp epu eu- euc eue euf eup fcc fce fcf fco fcp fcu fec fee fef feo fep feu ffc ffe fff ffo ffp ffu foc foe fof foo fop fou fpc fpe fpo fpp fpu fue fuf fuo fup fuu oc- occ ocf oco ocp ocu oec oee oef oeo oep of- ofc ofe off ofo ofp ofu oo- ooc oof ooo oop op- opc ope opf opo opp ou- ouc oue ouf ouo oup p-p pcc pce pcf pco pcp pcu pec pee pef peo pep peu pfc pfe pff pfo pfp pfu poc poe pof poo pop pou ppc ppe ppf ppo ppp ppu puc pue puf pup puu ucc uce ucf uco ucp ucu uec uee uef uep ufc ufe uff ufo ufp ufu uoc uoe uoo uop up- upc upe upf upo upp upu uuc uue uuu