-er -ic c-- ccc ccd cce cci ccn ccp ccr cdc cdd cde cdi cdn cdp cdr ce- cec ced cee cei cen cep cer ci- cic cid cie cii cin cip cir cn- cnc cnd cne cni cnn cnp cnr cpc cpd cpe cpi cpn cpp cpr crc crd cre cri crn crp crr dcc dcd dce dci dcn dcp dcr ddc ddd dde ddi ddn ddp ddr de- dec ded dee dei den dep der di- dic did die dii din dip dir dnc dnd dne dni dnn dnp dnr dpc dpd dpe dpi dpn dpp dpr drc drd dre dri drn drp drr ec- ecc ecd ece eci ecn ecr ed- edc edd ede edi edn edp edr eec eed eee een eep eer eic eid eie eii ein eip eir en- enc end ene eni enn enp enr ep- epc epd epe epi epn epp epr erc erd ere eri ern erp err i-d icc icd ice ici icn icp icr idc idd ide idi idn idp idr ie- iec ied iee iei ien iep ier iic iid iie iii iin iip iir in- inc ind ine ini inn inp inr ipc ipd ipe ipi ipn ipp ipr ir- irc ird ire iri irn irp irr n-i ncc ncd nce nci ncn ncp ncr ndc ndd nde ndi ndn ndp ndr ne- nec ned nee nei nen nep ner nic nid nie nii nin nip nir nnc nne nni nnn nnp npc npd npe npi npn npp npr nrc nrd nre nri nrn nrp nrr p-p pcc pcd pce pci pcn pcp pcr pdc pdd pde pdi pdn pdp pdr pec ped pee pei pen pep per pic pid pie pii pin pip pir pn- pnc pnd pne pni pnn pnp pnr ppc ppd ppe ppi ppn ppp ppr prc prd pre pri prn prp prr rcc rcd rce rci rcn rcp rcr rdc rdd rde rdi rdn rdp rdr re- rec red ree rei ren rep rer ric rid rie rii rin rip rir rnc rnd rni rnn rnp rnr rpc rpd rpe rpi rpn rpp rpr rrc rrd rri rrn rrp rrr