-er -ic -up c-- ccc cce cci cco ccp ccr ccu ce- cec cee cei ceo cep cer ceu ci- cic cie cii cio cip cir ciu co- coc coe coi coo cop cor cou cpc cpe cpi cpo cpp cpr cpu crc cre cri cro crp crr cru cuc cue cui cuo cup cur cuu ec- ecc ece eci eco ecr ecu eec eee eeo eep eer eic eie eii eio eip eir eiu eo- eoc eoe eoi eoo eop eor eou ep- epc epe epi epo epp epr epu erc ere eri ero erp err eru eu- euc eue eui eup eur icc ice ici ico icp icr icu ie- iec iee iei iep ier iic iie iii iio iip iir iiu io- ioc ioe ioi ioo iop ior iou ipc ipe ipi ipo ipp ipr ipu ir- irc ire iri iro irp irr iru iu- iuc iue iui iup iur o-i oc- occ oci oco ocp ocr ocu oec oee oei oeo oep oer oic oie oii oio oip oir oiu oo- ooc ooi ooo oop oor op- opc ope opi opo opp opr or- orc ore ori oro orp orr oru ou- ouc oue oui ouo oup our p-p pcc pce pci pco pcp pcr pcu pec pee pei peo pep per peu pic pie pii pio pip pir piu poc poe poi poo pop por pou ppc ppe ppi ppo ppp ppr ppu prc pre pri pro prp prr pru puc pue pui pup pur puu rcc rce rci rco rcp rcr rcu re- rec ree rei reo rep rer reu ric rie rii rio rip rir roc roe roi roo rop ror rou rpc rpe rpi rpo rpp rpr rpu rrc rri rrp rrr rru ruc rue rui ruo rup rur ruu ucc uce uci uco ucp ucr ucu uec uee uei uep uer uic uie uii uio uip uir uiu uoc uoe uoo uop uor up- upc upe upi upo upp upr upu ur- urc ure uri uro urp urr uru uuc uue uur uuu