-er -ic -up c-- ccc cce ccf cci cco ccp ccr ccs ccu ce- cec cee cef cei ceo cep cer ces ceu cfc cfe cff cfi cfo cfp cfr cfs cfu ci- cic cie cif cii cio cip cir cis ciu co- coc coe cof coi coo cop cor cos cou cpc cpe cpf cpi cpo cpp cpr cps cpu crc cre crf cri cro crp crr crs cru csc cse csf csi cso csp csr css csu cuc cue cuf cui cuo cup cur cus cuu ec- ecc ece ecf eci eco ecr ecs ecu eec eee eef eeo eep eer ees ef- efc efe eff efi efo efp efr efs eic eie eif eii eio eip eir eis eiu eo- eoc eoe eof eoi eoo eop eor eos eou ep- epc epe epf epi epo epp epr eps epu erc ere erf eri ero erp err ers eru es- esc ese esf esi eso esp esr ess esu eu- euc eue euf eui eup eur eus fcc fce fcf fci fco fcp fcr fcs fcu fec fee fef fei feo fep fer fes feu ffc ffe fff ffi ffo ffp ffr ffs ffu fic fie fif fii fip fir fis fiu foc foe fof foi foo fop for fos fou fpc fpe fpi fpo fpp fpr fps fpu frc fre frf fri fro frp frr frs fru fsc fse fsf fsi fso fsp fsr fss fsu fue fuf fui fuo fup fur fus fuu i-f icc ice icf ici ico icp icr ics icu ie- iec iee ief iei iep ier ies ifc ife iff ifi ifo ifp ifr ifs ifu iic iie iif iii iio iip iir iis iiu io- ioc ioe iof ioi ioo iop ior ios iou ipc ipe ipf ipi ipo ipp ipr ips ipu ir- irc ire irf iri iro irp irr irs iru is- isc ise isf isi iso isp isr iss isu iu- iuc iue iui iup iur ius o-i oc- occ ocf oci oco ocp ocr ocs ocu oec oee oef oei oeo oep oer oes of- ofc ofe off ofi ofo ofp ofr ofs ofu oic oie oif oii oio oip oir ois oiu oo- ooc oof ooi ooo oop oor oos op- opc ope opf opi opo opp opr ops or- orc ore orf ori oro orp orr ors oru os- osc ose osf osi oso osp osr oss osu ou- ouc oue ouf oui ouo oup our ous p-p pcc pce pcf pci pco pcp pcr pcs pcu pec pee pef pei peo pep per pes peu pfc pfe pff pfi pfo pfp pfr pfs pfu pic pie pif pii pio pip pir pis piu poc poe pof poi poo pop por pos pou ppc ppe ppf ppi ppo ppp ppr pps ppu prc pre prf pri pro prp prr prs pru ps- psc pse psf psi pso psp psr pss psu puc pue puf pui pup pur pus puu rcc rce rcf rci rco rcp rcr rcs rcu re- rec ree ref rei reo rep rer res reu rfc rfe rff rfi rfo rfp rfr rfs rfu ric rie rif rii rio rip rir ris roc roe rof roi roo rop ror ros rou rpc rpe rpf rpi rpo rpp rpr rps rpu rrc rrf rri rrp rrr rrs rru rsc rse rsf rsi rso rsp rsr rss rsu ruc rue ruf rui ruo rup rur rus ruu scc sce scf sci sco scp scr scs scu se- sec see sef sei seo sep ser ses seu sfc sfe sff sfi sfo sfp sfr sfs sfu sic sie sif sii sio sip sir sis siu soc soe sof soi soo sop sor sos sou spc spe spf spi spo spp spr sps spu sr- src sre srf sri sro srp srr srs ss- ssc sse ssf ssi sso ssp ssr sss ssu suc sue suf sui suo sup sur sus suu ucc uce ucf uci uco ucp ucr ucs ucu uec uee uef uei uep uer ues ufc ufe uff ufi ufo ufp ufr ufs ufu uic uie uif uii uio uip uir uis uiu uoc uoe uoo uop uor uos up- upc upe upf upi upo upp upr ups upu ur- urc ure urf uri uro urp urr urs uru usc use usf usi uso usp usr uss usu uuc uue uur uus uuu