-er -up c-- ccc cce cck ccn cco ccp ccr ccs ccu ce- cec cee cek cen ceo cep cer ces ceu ckc cko cks cn- cnc cne cnn cno cnp cnr cns cnu co- coc coe cok con coo cop cor cos cou cpc cpe cpk cpn cpo cpp cpr cps cpu crc cre crk crn cro crp crr crs cru csc cse csk csn cso csp csr css csu cuc cue cuk cun cuo cup cur cus cuu ec- ecc ece eck ecn eco ecr ecs ecu eec eee eek een eeo eep eer ees ekc eke eko ekp ekr eks eku en- enc ene enk enn eno enp enr ens enu eo- eoc eoe eok eon eoo eop eor eos eou ep- epc epe epn epo epp epr eps epu erc ere erk ern ero erp err ers eru es- esc ese esk esn eso esp esr ess esu eu- euc eue eun eup eur eus kcc kce kck kcn kcp kcr kcs kcu ke- kec kee kek ken keo kep ker kes kkc kke kkk kkn kkp kkr kks kku kn- knc kne knk knn kno knp knr knu koc koe kok kon koo kop kor kos kou kpc kpe kpk kpn kpo kpp kpr kps kpu krc krk krn kro krp krr krs kru ksc kse ksk ksn kso ksp ksr kss ksu kuc kue kuk kun kup kur kus kuu ncc nce nck ncn nco ncp ncr ncs ncu ne- nec nee nek nen neo nep ner nes neu nkc nke nkk nkn nko nkp nkr nks nku nnc nne nnk nnn nno nnp nns nnu no- noc noe nok non noo nop nor nos nou npc npe npn npo npp npr nps npu nrc nre nrk nrn nro nrp nrr nrs nru nsc nse nsk nsn nso nsp nsr nss nsu nuc nue nuk nun nuo nup nur nus nuu oc- occ ock ocn oco ocp ocr ocs ocu oec oee oen oeo oep oer oes okc oke okk oko okp okr oks oku on- onc one onk onn ono onp onr ons onu oo- ooc ook oon ooo oop oor oos op- opc ope opk opn opo opp opr ops or- orc ore ork orn oro orp orr ors oru os- osc ose osk osn oso osp osr oss osu ou- ouc oue ouk oun ouo oup our ous p-p pcc pce pck pcn pco pcp pcr pcs pcu pec pee pek pen peo pep per pes peu pkc pke pkn pko pkp pkr pks pku pn- pnc pne pnk pnn pno pnp pnr pns pnu poc poe pok pon poo pop por pos pou ppc ppe ppk ppn ppo ppp ppr pps ppu prc pre prk prn pro prp prr prs pru ps- psc pse psk psn pso psp psr pss psu puc pue puk pun pup pur pus puu rcc rce rcn rco rcp rcr rcs rcu re- rec ree rek ren reo rep rer res reu rkc rke rkk rko rkp rks rku rnc rnn rno rnp rnr rns rnu roc roe rok ron roo rop ror ros rou rpc rpe rpk rpn rpo rpp rpr rps rpu rrc rrk rrn rrp rrr rrs rru rsc rse rsk rsn rso rsp rsr rss rsu ruc rue ruk run ruo rup rur rus ruu scc sce sck scn sco scp scr scs scu se- sec see sek sen seo sep ser ses seu sk- skc ske skk sko skp skr sks sku snc sne snk snn sno snp snr sns snu soc soe sok son soo sop sor sos sou spc spe spk spn spo spp spr sps spu sr- src sre srk srn sro srp srr srs ss- ssc sse ssk ssn sso ssp ssr sss ssu suc sue suk sun suo sup sur sus suu ucc uce uck ucn uco ucp ucr ucs ucu uec uee uen uep uer ues ukc uke ukk ukn ukp ukr uku un- unc une unk unn uno unp unr uns unu uoc uoe uok uon uoo uop uor uos up- upc upe upk upn upo upp upr ups upu ur- urc ure urk urn uro urp urr urs uru usc use usk usn uso usp usr uss usu uuc uue uun uur uus uuu