-er -ic c-- ccc cce ccf cci ccl ccp ccr ce- cec cee cef cei cel cep cer cfc cfe cff cfi cfl cfp cfr ci- cic cie cif cii cil cip cir cl- clc cle clf cli cll clp clr cpc cpe cpf cpi cpl cpp cpr crc cre crf cri crl crp crr ec- ecc ece ecf eci ecl ecr eec eee eef eel eep eer ef- efc efe eff efi efl efp efr eic eie eif eii eil eip eir elc ele elf eli ell elp elr ep- epc epe epf epi epl epp epr erc ere erf eri erl erp err fcc fce fcf fci fcl fcp fcr fec fee fef fei fel fep fer ffc ffe fff ffi ffl ffp ffr fic fie fif fii fil fip fir flc fle flf fli fll flp flr fpc fpe fpi fpl fpp fpr frc fre frf fri frl frp frr i-f icc ice icf ici icl icp icr ie- iec iee ief iei iel iep ier ifc ife iff ifi ifl ifp ifr iic iie iif iii iil iip iir il- ilc ile ilf ili ill ilp ilr ipc ipe ipf ipi ipl ipp ipr ir- irc ire irf iri irl irp irr l-p lcc lce lcf lci lcl lcp lcr lec lee lef lei lel lep ler lfc lfe lff lfi lfl lfp lfr lic lie lif lii lil lip lir llc lle llf lli lll llp llr lpc lpe lpf lpi lpl lpp lpr lrc lrf lri lrp lrr p-p pcc pce pcf pci pcl pcp pcr pec pee pef pei pel pep per pfc pfe pff pfi pfl pfp pfr pic pie pif pii pil pip pir plc ple plf pli pll plp plr ppc ppe ppf ppi ppl ppp ppr prc pre prf pri prl prp prr rcc rce rcf rci rcl rcp rcr re- rec ree ref rei rel rep rer rfc rfe rff rfi rfl rfp rfr ric rie rif rii ril rip rir rlc rle rlf rli rll rlp rlr rpc rpe rpf rpi rpl rpp rpr rrc rrf rri rrl rrp rrr