-er -ic c-- ccc cce cci ccn cco ccp ccr ce- cec cee cei cen ceo cep cer ci- cic cie cii cin cio cip cir cn- cnc cne cni cnn cno cnp cnr co- coc coe coi con coo cop cor cpc cpe cpi cpn cpo cpp cpr crc cre cri crn cro crp crr ec- ecc ece eci ecn eco ecr eec eee een eeo eep eer eic eie eii ein eio eip eir en- enc ene eni enn eno enp enr eo- eoc eoe eoi eon eoo eop eor ep- epc epe epi epn epo epp epr erc ere eri ern ero erp err icc ice ici icn ico icp icr ie- iec iee iei ien iep ier iic iie iii iin iio iip iir in- inc ine ini inn ino inp inr io- ioc ioe ioi ion ioo iop ior ipc ipe ipi ipn ipo ipp ipr ir- irc ire iri irn iro irp irr n-i ncc nce nci ncn nco ncp ncr ne- nec nee nei nen neo nep ner nic nie nii nin nio nip nir nnc nne nni nnn nno nnp no- noc noe noi non noo nop nor npc npe npi npn npo npp npr nrc nre nri nrn nro nrp nrr o-i oc- occ oci ocn oco ocp ocr oec oee oei oen oeo oep oer oic oie oii oin oio oip oir on- onc one oni onn ono onp onr oo- ooc ooi oon ooo oop oor op- opc ope opi opn opo opp opr or- orc ore ori orn oro orp orr p-p pcc pce pci pcn pco pcp pcr pec pee pei pen peo pep per pic pie pii pin pio pip pir pn- pnc pne pni pnn pno pnp pnr poc poe poi pon poo pop por ppc ppe ppi ppn ppo ppp ppr prc pre pri prn pro prp prr rcc rce rci rcn rco rcp rcr re- rec ree rei ren reo rep rer ric rie rii rin rio rip rir rnc rni rnn rno rnp rnr roc roe roi ron roo rop ror rpc rpe rpi rpn rpo rpp rpr rrc rri rrn rrp rrr