-er -ic c-- ccc ccd cce cci ccn cco ccr ccs cdc cdd cde cdi cdn cdo cdr cds ce- cec ced cee cei cen ceo cer ces ci- cic cid cie cii cin cio cir cis cn- cnc cnd cne cni cnn cno cnr cns co- coc cod coe coi con coo cor cos crc crd cre cri crn cro crr crs csc csd cse csi csn cso csr css dcc dcd dce dci dcn dco dcr dcs ddc ddd dde ddi ddn ddo ddr dds de- dec ded dee dei den deo der des di- dic did die dii din dio dir dis dnc dnd dne dni dnn dno dnr dns doc dod doe doi don doo dor dos drc drd dre dri drn dro drr drs dsc dsd dse dsi dsn dso dsr dss ec- ecc ecd ece eci ecn eco ecr ecs ed- edc edd ede edi edn edo edr eds eec eed eee een eeo eer ees eic eid eie eii ein eio eir eis en- enc end ene eni enn eno enr ens eo- eoc eod eoe eoi eon eoo eor eos erc erd ere eri ern ero err ers es- esc esd ese esi esn eso esr ess i-d icc icd ice ici icn ico icr ics idc idd ide idi idn ido idr ids ie- iec ied iee iei ien ier ies iic iid iie iii iin iio iir iis in- inc ind ine ini inn ino inr ins io- ioc iod ioe ioi ion ioo ior ios ir- irc ird ire iri irn iro irr irs is- isc isd ise isi isn iso isr iss n-i ncc ncd nce nci ncn nco ncr ncs ndc ndd nde ndi ndn ndo ndr nds ne- nec ned nee nei nen neo ner nes nic nid nie nii nin nio nir nis nnc nne nni nnn nno nns no- noc nod noe noi non noo nor nos nrc nrd nre nri nrn nro nrr nrs nsc nsd nse nsi nsn nso nsr nss o-i oc- occ ocd oci ocn oco ocr ocs odc odd ode odi odn odo odr ods oec oed oee oei oen oeo oer oes oic oid oie oii oin oio oir ois on- onc ond one oni onn ono onr ons oo- ooc ood ooi oon ooo oor oos or- orc ord ore ori orn oro orr ors os- osc osd ose osi osn oso osr oss rcc rcd rce rci rcn rco rcr rcs rdc rdd rde rdi rdn rdo rdr rds re- rec red ree rei ren reo rer res ric rid rie rii rin rio rir ris rnc rnd rni rnn rno rnr rns roc rod roe roi ron roo ror ros rrc rrd rri rrn rrr rrs rsc rsd rse rsi rsn rso rsr rss scc scd sce sci scn sco scr scs sdc sdd sde sdi sdn sdo sdr sds se- sec sed see sei sen seo ser ses sic sid sie sii sin sio sir sis snc snd sne sni snn sno snr sns soc sod soe soi son soo sor sos sr- src srd sre sri srn sro srr srs ss- ssc ssd sse ssi ssn sso ssr sss