-er c-- ccc ccd cce ccf cck ccl ccn ccr cdc cdd cde cdf cdk cdl cdn cdr ce- cec ced cee cef cek cel cen cer cfc cfd cfe cff cfk cfl cfn cfr ckc ckd cl- clc cld cle clf clk cll cln clr cn- cnc cnd cne cnf cnl cnn cnr crc crd cre crf crk crl crn crr dcc dcd dce dcf dck dcl dcn dcr ddc ddd dde ddf ddk ddl ddn ddr de- dec ded dee def dek del den der dfc dfd dfe dff dfk dfl dfn dfr dkc dke dkk dkl dkr dl- dlc dld dle dlf dlk dll dlr dnc dnd dne dnf dnk dnl dnn dnr drc drd dre drk drl drn drr ec- ecc ecd ece ecf eck ecl ecn ecr ed- edc edd ede edf edk edl edn edr eec eed eee eef eek eel een eer ef- efc efd efe eff efl efr ekc ekd eke ekf ekl ekr elc eld ele elf elk ell eln elr en- enc end ene enf enk enl enn enr erc erd ere erf erk erl ern err fcc fcd fce fcf fck fcl fcn fcr fdc fdd fde fdf fdk fdl fdn fdr fec fed fee fef fek fel fen fer ffc ffd ffe fff ffk ffl ffn ffr fkc fkf fkk fkl flc fld fle flf fll fln flr fnc fnd fne fnf fnk fnl fnn fnr frc frd fre frf frk frl frn frr kcc kcd kce kck kcl kcn kcr kdc kde kdf kdk kdl kdr ke- kec ked kee kef kek kel ken ker kfc kfd kff kkc kke kkk kkl kkn kkr kl- klc kld klf klr kn- knc knd kne knf knk knl knn knr krc krd krf krk krl krn krr lcc lcd lce lcf lck lcl lcn lcr ldc ldd lde ldf ldk ldl ldn ldr lec led lee lef lek lel len ler lfc lfd lfe lff lfk lfl lfn lfr lkl lkr llc lld lle llf llk lll lln llr lnc lnd lne lnk lnl lnn lnr lrc lrd lrf lrk lrn lrr ncc ncd nce ncf nck ncl ncn ncr ndc ndd nde ndf ndk ndl ndn ndr ne- nec ned nee nef nek nel nen ner nfc nfd nfe nff nfk nfl nfn nfr nkc nke nkf nkk nkn nkr nlc nld nle nlf nlk nll nln nlr nnc nne nnf nnk nnl nnn nrc nrd nre nrf nrk nrl nrn nrr rcc rcd rce rcf rcl rcn rcr rdc rdd rde rdf rdl rdn rdr re- rec red ree ref rek rel ren rer rfc rfd rfe rff rfk rfl rfn rfr rkc rke rkf rkk rlc rld rle rlf rll rln rlr rnc rnd rnn rnr rrc rrd rrf rrk rrl rrn rrr