-er -ic -up c-- ccc cce ccf cci ccp ccr ccs ccu ce- cec cee cef cei cep cer ces ceu cfc cfe cff cfi cfp cfr cfs cfu ci- cic cie cif cii cip cir cis ciu cpc cpe cpf cpi cpp cpr cps cpu crc cre crf cri crp crr crs cru csc cse csf csi csp csr css csu cuc cue cuf cui cup cur cus cuu ec- ecc ece ecf eci ecr ecs ecu eec eee eef eep eer ees ef- efc efe eff efi efp efr efs eic eie eif eii eip eir eis eiu ep- epc epe epf epi epp epr eps epu erc ere erf eri erp err ers eru es- esc ese esf esi esp esr ess esu eu- euc eue euf eui eup eur eus fcc fce fcf fci fcp fcr fcs fcu fec fee fef fei fep fer fes feu ffc ffe fff ffi ffp ffr ffs ffu fic fie fif fii fip fir fis fiu fpc fpe fpi fpp fpr fps fpu frc fre frf fri frp frr frs fru fsc fse fsf fsi fsp fsr fss fsu fue fuf fui fup fur fus fuu i-f icc ice icf ici icp icr ics icu ie- iec iee ief iei iep ier ies ifc ife iff ifi ifp ifr ifs ifu iic iie iif iii iip iir iis iiu ipc ipe ipf ipi ipp ipr ips ipu ir- irc ire irf iri irp irr irs iru is- isc ise isf isi isp isr iss isu iu- iuc iue iui iup iur ius p-p pcc pce pcf pci pcp pcr pcs pcu pec pee pef pei pep per pes peu pfc pfe pff pfi pfp pfr pfs pfu pic pie pif pii pip pir pis piu ppc ppe ppf ppi ppp ppr pps ppu prc pre prf pri prp prr prs pru ps- psc pse psf psi psp psr pss psu puc pue puf pui pup pur pus puu rcc rce rcf rci rcp rcr rcs rcu re- rec ree ref rei rep rer res reu rfc rfe rff rfi rfp rfr rfs rfu ric rie rif rii rip rir ris rpc rpe rpf rpi rpp rpr rps rpu rrc rrf rri rrp rrr rrs rru rsc rse rsf rsi rsp rsr rss rsu ruc rue ruf rui rup rur rus ruu scc sce scf sci scp scr scs scu se- sec see sef sei sep ser ses seu sfc sfe sff sfi sfp sfr sfs sfu sic sie sif sii sip sir sis siu spc spe spf spi spp spr sps spu sr- src sre srf sri srp srr srs ss- ssc sse ssf ssi ssp ssr sss ssu suc sue suf sui sup sur sus suu ucc uce ucf uci ucp ucr ucs ucu uec uee uef uei uep uer ues ufc ufe uff ufi ufp ufr ufs ufu uic uie uif uii uip uir uis uiu up- upc upe upf upi upp upr ups upu ur- urc ure urf uri urp urr urs uru usc use usf usi usp usr uss usu uuc uue uur uus uuu