-er -up c-- ccc cce cco ccp ccr ccs cct ccu ce- cec cee ceo cep cer ces cet ceu co- coc coe coo cop cor cos cot cou cpc cpe cpo cpp cpr cps cpt cpu crc cre cro crp crr crs crt cru csc cse cso csp csr css cst csu ctc cte cto ctp ctr cts ctt ctu cuc cue cuo cup cur cus cut cuu ec- ecc ece eco ecr ecs ect ecu eec eee eeo eep eer ees eet eo- eoc eoe eoo eop eor eos eot eou ep- epc epe epo epp epr eps ept epu erc ere ero erp err ers ert eru es- esc ese eso esp esr ess est esu etc ete eto etp etr ets ett etu eu- euc eue eup eur eus eut oc- occ oco ocp ocr ocs oct ocu oec oee oeo oep oer oes oet oo- ooc ooo oop oor oos oot op- opc ope opo opp opr ops opt or- orc ore oro orp orr ors ort oru os- osc ose oso osp osr oss ost osu ot- otc ote oto otp otr ots ott otu ou- ouc oue ouo oup our ous out p-p pcc pce pco pcp pcr pcs pct pcu pec pee peo pep per pes pet peu poc poe poo pop por pos pot pou ppc ppe ppo ppp ppr pps ppt ppu prc pre pro prp prr prs prt pru ps- psc pse pso psp psr pss pst psu pt- ptc pte pto ptp ptr pts ptt ptu puc pue pup pur pus put puu rcc rce rco rcp rcr rcs rct rcu re- rec ree reo rep rer res ret reu roc roe roo rop ror ros rot rou rpc rpe rpo rpp rpr rps rpt rpu rrc rrp rrr rrs rrt rru rsc rse rso rsp rsr rss rst rsu rtc rte rto rtp rtr rts rtt rtu ruc rue ruo rup rur rus rut ruu scc sce sco scp scr scs sct scu se- sec see seo sep ser ses set seu soc soe soo sop sor sos sot sou spc spe spo spp spr sps spt spu sr- src sre sro srp srr srs srt ss- ssc sse sso ssp ssr sss sst ssu stc ste sto stp str sts stt stu suc sue suo sup sur sus sut suu tcc tce tco tcp tcr tcs tct tcu te- tec tee teo tep ter tes tet teu to- toc toe too top tor tos tot tou tpc tpe tpo tpp tpr tps tpt tpu trc tre tro trp trr trs trt tru tsc tse tso tsp tsr tss tst tsu ttc tte tto ttp ttr tts ttt ttu tuc tue tuo tup tur tus tut tuu ucc uce uco ucp ucr ucs uct ucu uec uee uep uer ues uet uoc uoe uoo uop uor uos uot up- upc upe upo upp upr ups upt upu ur- urc ure uro urp urr urs urt uru usc use uso usp usr uss ust usu utc ute uto utp utr uts utt utu uuc uue uur uus uut uuu