c-- ccc cce cck ccn cco ccp cct ce- cec cee cek cen ceo cep cet ckc cko ckt cn- cnc cne cnn cno cnp cnt co- coc coe cok con coo cop cot cpc cpe cpk cpn cpo cpp cpt ctc cte ctk ctn cto ctp ctt ec- ecc ece eck ecn eco ect eec eee eek een eeo eep eet ekc eke eko ekp ekt en- enc ene enk enn eno enp ent eo- eoc eoe eok eon eoo eop eot ep- epc epe epn epo epp ept etc ete etk etn eto etp ett k-t kcc kce kck kcn kcp kct ke- kec kee kek ken keo kep ket kkc kke kkk kkn kkp kkt kn- knc kne knk knn kno knp knt koc koe kok kon koo kop kot kpc kpe kpk kpn kpo kpp kpt ktc kte ktk ktn kto ktp ktt ncc nce nck ncn nco ncp nct ne- nec nee nek nen neo nep net nkc nke nkk nkn nko nkp nkt nnc nne nnk nnn nno nnp nnt no- noc noe nok non noo nop not npc npe npn npo npp npt ntc nte ntk ntn nto ntp ntt oc- occ ock ocn oco ocp oct oec oee oen oeo oep oet okc oke okk oko okp on- onc one onk onn ono onp ont oo- ooc ook oon ooo oop oot op- opc ope opk opn opo opp opt ot- otc ote otk otn oto otp ott p-p pcc pce pck pcn pco pcp pct pec pee pek pen peo pep pet pkc pke pkn pko pkp pkt pn- pnc pne pnk pnn pno pnp pnt poc poe pok pon poo pop pot ppc ppe ppk ppn ppo ppp ppt pt- ptc pte ptk ptn pto ptp ptt tcc tce tck tcn tco tcp tct te- tec tee tek ten teo tep tet tkc tke tkk tko tkp tkt tnc tne tnk tnn tno tnp tnt to- toc toe tok ton too top tot tpc tpe tpk tpn tpo tpp tpt ttc tte ttk ttn tto ttp ttt