-er -up c-- ccc cce cck cco ccp ccr ccs cct ccu ce- cec cee cek ceo cep cer ces cet ceu ckc cko cks ckt co- coc coe cok coo cop cor cos cot cou cpc cpe cpk cpo cpp cpr cps cpt cpu crc cre crk cro crp crr crs crt cru csc cse csk cso csp csr css cst csu ctc cte ctk cto ctp ctr cts ctt ctu cuc cue cuk cuo cup cur cus cut cuu ec- ecc ece eck eco ecr ecs ect ecu eec eee eek eeo eep eer ees eet ekc eke eko ekp ekr eks ekt eku eo- eoc eoe eok eoo eop eor eos eot eou ep- epc epe epo epp epr eps ept epu erc ere erk ero erp err ers ert eru es- esc ese esk eso esp esr ess est esu etc ete etk eto etp etr ets ett etu eu- euc eue eup eur eus eut k-t kcc kce kck kcp kcr kcs kct kcu ke- kec kee kek keo kep ker kes ket kkc kke kkk kkp kkr kks kkt kku koc koe kok koo kop kor kos kot kou kpc kpe kpk kpo kpp kpr kps kpt kpu krc krk kro krp krr krs krt kru ksc kse ksk kso ksp ksr kss kst ksu ktc kte ktk kto ktp ktr kts ktt ktu kuc kue kuk kup kur kus kut kuu oc- occ ock oco ocp ocr ocs oct ocu oec oee oeo oep oer oes oet okc oke okk oko okp okr oks oku oo- ooc ook ooo oop oor oos oot op- opc ope opk opo opp opr ops opt or- orc ore ork oro orp orr ors ort oru os- osc ose osk oso osp osr oss ost osu ot- otc ote otk oto otp otr ots ott otu ou- ouc oue ouk ouo oup our ous out p-p pcc pce pck pco pcp pcr pcs pct pcu pec pee pek peo pep per pes pet peu pkc pke pko pkp pkr pks pkt pku poc poe pok poo pop por pos pot pou ppc ppe ppk ppo ppp ppr pps ppt ppu prc pre prk pro prp prr prs prt pru ps- psc pse psk pso psp psr pss pst psu pt- ptc pte ptk pto ptp ptr pts ptt ptu puc pue puk pup pur pus put puu rcc rce rco rcp rcr rcs rct rcu re- rec ree rek reo rep rer res ret reu rkc rke rkk rko rkp rks rkt rku roc roe rok roo rop ror ros rot rou rpc rpe rpk rpo rpp rpr rps rpt rpu rrc rrk rrp rrr rrs rrt rru rsc rse rsk rso rsp rsr rss rst rsu rtc rte rtk rto rtp rtr rts rtt rtu ruc rue ruk ruo rup rur rus rut ruu scc sce sck sco scp scr scs sct scu se- sec see sek seo sep ser ses set seu sk- skc ske skk sko skp skr sks skt sku soc soe sok soo sop sor sos sot sou spc spe spk spo spp spr sps spt spu sr- src sre srk sro srp srr srs srt ss- ssc sse ssk sso ssp ssr sss sst ssu stc ste stk sto stp str sts stt stu suc sue suk suo sup sur sus sut suu tcc tce tck tco tcp tcr tcs tct tcu te- tec tee tek teo tep ter tes tet teu tkc tke tkk tko tkp tkr tks tkt to- toc toe tok too top tor tos tot tou tpc tpe tpk tpo tpp tpr tps tpt tpu trc tre trk tro trp trr trs trt tru tsc tse tsk tso tsp tsr tss tst tsu ttc tte ttk tto ttp ttr tts ttt ttu tuc tue tuk tuo tup tur tus tut tuu ucc uce uck uco ucp ucr ucs uct ucu uec uee uep uer ues uet ukc uke ukk ukp ukr uku uoc uoe uok uoo uop uor uos uot up- upc upe upk upo upp upr ups upt upu ur- urc ure urk uro urp urr urs urt uru usc use usk uso usp usr uss ust usu utc ute utk uto utp utr uts utt utu uuc uue uur uus uut uuu