-er -up c-- ccc cce ccf cco ccp ccr ccs ccu ce- cec cee cef ceo cep cer ces ceu cfc cfe cff cfo cfp cfr cfs cfu co- coc coe cof coo cop cor cos cou cpc cpe cpf cpo cpp cpr cps cpu crc cre crf cro crp crr crs cru csc cse csf cso csp csr css csu cuc cue cuf cuo cup cur cus cuu ec- ecc ece ecf eco ecr ecs ecu eec eee eef eeo eep eer ees ef- efc efe eff efo efp efr efs eo- eoc eoe eof eoo eop eor eos eou ep- epc epe epf epo epp epr eps epu erc ere erf ero erp err ers eru es- esc ese esf eso esp esr ess esu eu- euc eue euf eup eur eus fcc fce fcf fco fcp fcr fcs fcu fec fee fef feo fep fer fes feu ffc ffe fff ffo ffp ffr ffs ffu foc foe fof foo fop for fos fou fpc fpe fpo fpp fpr fps fpu frc fre frf fro frp frr frs fru fsc fse fsf fso fsp fsr fss fsu fue fuf fuo fup fur fus fuu oc- occ ocf oco ocp ocr ocs ocu oec oee oef oeo oep oer oes of- ofc ofe off ofo ofp ofr ofs ofu oo- ooc oof ooo oop oor oos op- opc ope opf opo opp opr ops or- orc ore orf oro orp orr ors oru os- osc ose osf oso osp osr oss osu ou- ouc oue ouf ouo oup our ous p-p pcc pce pcf pco pcp pcr pcs pcu pec pee pef peo pep per pes peu pfc pfe pff pfo pfp pfr pfs pfu poc poe pof poo pop por pos pou ppc ppe ppf ppo ppp ppr pps ppu prc pre prf pro prp prr prs pru ps- psc pse psf pso psp psr pss psu puc pue puf pup pur pus puu rcc rce rcf rco rcp rcr rcs rcu re- rec ree ref reo rep rer res reu rfc rfe rff rfo rfp rfr rfs rfu roc roe rof roo rop ror ros rou rpc rpe rpf rpo rpp rpr rps rpu rrc rrf rrp rrr rrs rru rsc rse rsf rso rsp rsr rss rsu ruc rue ruf ruo rup rur rus ruu scc sce scf sco scp scr scs scu se- sec see sef seo sep ser ses seu sfc sfe sff sfo sfp sfr sfs sfu soc soe sof soo sop sor sos sou spc spe spf spo spp spr sps spu sr- src sre srf sro srp srr srs ss- ssc sse ssf sso ssp ssr sss ssu suc sue suf suo sup sur sus suu ucc uce ucf uco ucp ucr ucs ucu uec uee uef uep uer ues ufc ufe uff ufo ufp ufr ufs ufu uoc uoe uoo uop uor uos up- upc upe upf upo upp upr ups upu ur- urc ure urf uro urp urr urs uru usc use usf uso usp usr uss usu uuc uue uur uus uuu