-er -ic c-- ccc ccd cce cci ccn ccr ccs cdc cdd cde cdi cdn cdr cds ce- cec ced cee cei cen cer ces ci- cic cid cie cii cin cir cis cn- cnc cnd cne cni cnn cnr cns crc crd cre cri crn crr crs csc csd cse csi csn csr css dcc dcd dce dci dcn dcr dcs ddc ddd dde ddi ddn ddr dds de- dec ded dee dei den der des di- dic did die dii din dir dis dnc dnd dne dni dnn dnr dns drc drd dre dri drn drr drs dsc dsd dse dsi dsn dsr dss ec- ecc ecd ece eci ecn ecr ecs ed- edc edd ede edi edn edr eds eec eed eee een eer ees eic eid eie eii ein eir eis en- enc end ene eni enn enr ens erc erd ere eri ern err ers es- esc esd ese esi esn esr ess i-d icc icd ice ici icn icr ics idc idd ide idi idn idr ids ie- iec ied iee iei ien ier ies iic iid iie iii iin iir iis in- inc ind ine ini inn inr ins ir- irc ird ire iri irn irr irs is- isc isd ise isi isn isr iss n-i ncc ncd nce nci ncn ncr ncs ndc ndd nde ndi ndn ndr nds ne- nec ned nee nei nen ner nes nic nid nie nii nin nir nis nnc nne nni nnn nns nrc nrd nre nri nrn nrr nrs nsc nsd nse nsi nsn nsr nss rcc rcd rce rci rcn rcr rcs rdc rdd rde rdi rdn rdr rds re- rec red ree rei ren rer res ric rid rie rii rin rir ris rnc rnd rni rnn rnr rns rrc rrd rri rrn rrr rrs rsc rsd rse rsi rsn rsr rss scc scd sce sci scn scr scs sdc sdd sde sdi sdn sdr sds se- sec sed see sei sen ser ses sic sid sie sii sin sir sis snc snd sne sni snn snr sns sr- src srd sre sri srn srr srs ss- ssc ssd sse ssi ssn ssr sss