-er -ic c-- ccc ccd cce cci cck ccl ccn ccr cdc cdd cde cdi cdk cdl cdn cdr ce- cec ced cee cei cek cel cen cer ci- cic cid cie cii cik cil cin cir ckc ckd cki cl- clc cld cle cli clk cll cln clr cn- cnc cnd cne cni cnl cnn cnr crc crd cre cri crk crl crn crr dcc dcd dce dci dck dcl dcn dcr ddc ddd dde ddi ddk ddl ddn ddr de- dec ded dee dei dek del den der di- dic did die dii dik dil din dir dkc dke dki dkk dkl dkr dl- dlc dld dle dli dlk dll dlr dnc dnd dne dni dnk dnl dnn dnr drc drd dre dri drk drl drn drr ec- ecc ecd ece eci eck ecl ecn ecr ed- edc edd ede edi edk edl edn edr eec eed eee eek eel een eer eic eid eie eii eik eil ein eir ekc ekd eke eki ekl ekr elc eld ele eli elk ell eln elr en- enc end ene eni enk enl enn enr erc erd ere eri erk erl ern err i-d icc icd ice ici ick icl icn icr idc idd ide idi idk idl idn idr ie- iec ied iee iei iek iel ien ier iic iid iie iii iil iin iir ikc ike iki ikk ikl ikr il- ilc ild ile ili ilk ill iln ilr in- inc ind ine ini ink inl inn inr ir- irc ird ire iri irk irl irn irr kcc kcd kce kci kck kcl kcn kcr kdc kde kdk kdl kdr ke- kec ked kee kei kek kel ken ker kic kid kie kii kik kil kin kir kkc kke kki kkk kkl kkn kkr kl- klc kld kli klr kn- knc knd kne kni knk knl knn knr krc krd kri krk krl krn krr lcc lcd lce lci lck lcl lcn lcr ldc ldd lde ldi ldk ldl ldn ldr lec led lee lei lek lel len ler lic lid lie lii lik lil lin lir lkl lkr llc lld lle lli llk lll lln llr lnc lnd lne lni lnk lnl lnn lnr lrc lrd lri lrk lrn lrr n-i ncc ncd nce nci nck ncl ncn ncr ndc ndd nde ndi ndk ndl ndn ndr ne- nec ned nee nei nek nel nen ner nic nid nie nii nik nil nin nir nkc nke nki nkk nkn nkr nlc nld nle nli nlk nll nln nlr nnc nne nni nnk nnl nnn nrc nrd nre nri nrk nrl nrn nrr rcc rcd rce rci rcl rcn rcr rdc rdd rde rdi rdl rdn rdr re- rec red ree rei rek rel ren rer ric rid rie rii rik ril rin rir rkc rke rkk rlc rld rle rli rll rln rlr rnc rnd rni rnn rnr rrc rrd rri rrk rrl rrn rrr