c-- ccc ccf cck ccl ccn ccr cfc cff cfk cfl cfn cfr ckc cl- clc clf clk cll cln clr cn- cnc cnf cnl cnn cnr crc crf crk crl crn crr fcc fcf fck fcl fcn fcr ffc fff ffk ffl ffn ffr fkc fkf fkk fkl flc flf fll fln flr fnc fnf fnk fnl fnn fnr frc frf frk frl frn frr kcc kck kcl kcn kcr kfc kff kkc kkk kkl kkn kkr kl- klc klf klr kn- knc knf knk knl knn knr krc krf krk krl krn krr lcc lcf lck lcl lcn lcr lfc lff lfk lfl lfn lfr lkl lkr llc llf llk lll lln llr lnc lnk lnl lnn lnr lrc lrf lrk lrn lrr ncc ncf nck ncl ncn ncr nfc nff nfk nfl nfn nfr nkc nkf nkk nkn nkr nlc nlf nlk nll nln nlr nnc nnf nnk nnl nnn nrc nrf nrk nrl nrn nrr rcc rcf rcl rcn rcr rfc rff rfk rfl rfn rfr rkc rkf rkk rlc rlf rll rln rlr rnc rnn rnr rrc rrf rrk rrl rrn rrr