-up c-- ccc cce ccn cco ccp ccu ce- cec cee cen ceo cep ceu cn- cnc cne cnn cno cnp cnu co- coc coe con coo cop cou cpc cpe cpn cpo cpp cpu cuc cue cun cuo cup cuu ec- ecc ece ecn eco ecu eec eee een eeo eep en- enc ene enn eno enp enu eo- eoc eoe eon eoo eop eou ep- epc epe epn epo epp epu eu- euc eue eun eup ncc nce ncn nco ncp ncu ne- nec nee nen neo nep neu nnc nne nnn nno nnp nnu no- noc noe non noo nop nou npc npe npn npo npp npu nuc nue nun nuo nup nuu oc- occ ocn oco ocp ocu oec oee oen oeo oep on- onc one onn ono onp onu oo- ooc oon ooo oop op- opc ope opn opo opp ou- ouc oue oun ouo oup p-p pcc pce pcn pco pcp pcu pec pee pen peo pep peu pn- pnc pne pnn pno pnp pnu poc poe pon poo pop pou ppc ppe ppn ppo ppp ppu puc pue pun pup puu ucc uce ucn uco ucp ucu uec uee uen uep un- unc une unn uno unp unu uoc uoe uon uoo uop up- upc upe upn upo upp upu uuc uue uun uuu