-er -ic c-- ccc cce ccf cci cck ccl ccp ccr ccx ce- cec cee cef cei cek cel cep cer cex cfc cfe cff cfi cfk cfl cfp cfr cfx ci- cic cie cif cii cik cil cip cir cix ckc cki ckx cl- clc cle clf cli clk cll clp clr clx cpc cpe cpf cpi cpk cpl cpp cpr cpx crc cre crf cri crk crl crp crr crx cxc cxf cxi cxk cxl cxp cxr cxx ec- ecc ece ecf eci eck ecl ecr ecx eec eee eef eek eel eep eer eex ef- efc efe eff efi efl efp efr efx eic eie eif eii eik eil eip eir eix ekc eke ekf eki ekl ekp ekr elc ele elf eli elk ell elp elr elx ep- epc epe epf epi epl epp epr epx erc ere erf eri erk erl erp err ex- exc exe exi exl exp exr exx fcc fce fcf fci fck fcl fcp fcr fcx fec fee fef fei fek fel fep fer fex ffc ffe fff ffi ffk ffl ffp ffr ffx fic fie fif fii fik fil fip fir fix fkc fkf fki fkk fkl fkp flc fle flf fli fll flp flr flx fpc fpe fpi fpk fpl fpp fpr fpx frc fre frf fri frk frl frp frr fxe fxi fxp fxr fxx i-f icc ice icf ici ick icl icp icr ie- iec iee ief iei iek iel iep ier iex ifc ife iff ifi ifl ifp ifr ifx iic iie iif iii iil iip iir iix ikc ike ikf iki ikk ikl ikr ikx il- ilc ile ilf ili ilk ill ilp ilr ilx ipc ipe ipf ipi ipl ipp ipr ipx ir- irc ire irf iri irk irl irp irr irx ixc ixe ixi ixl kcc kce kci kck kcl kcp kcr kcx ke- kec kee kef kei kek kel kep ker kex kfc kff kfi kfx kic kie kif kii kik kil kip kir kix kkc kke kki kkk kkl kkp kkr kl- klc klf kli klr klx kpc kpe kpf kpi kpk kpl kpp kpr krc krf kri krk krl krp krr kxl l-p lcc lce lcf lci lck lcl lcp lcr lcx lec lee lef lei lek lel lep ler lex lfc lfe lff lfi lfk lfl lfp lfr lfx lic lie lif lii lik lil lip lir lix lkl lkp lkr llc lle llf lli llk lll llp llr lpc lpe lpf lpi lpk lpl lpp lpr lpx lrc lrf lri lrk lrp lrr lxc lxi lxr lxx p-p pcc pce pcf pci pck pcl pcp pcr pcx pec pee pef pei pek pel pep per pex pfc pfe pff pfi pfk pfl pfp pfr pfx pic pie pif pii pik pil pip pir pix pkc pke pkf pki pkl pkp pkr plc ple plf pli plk pll plp plr plx ppc ppe ppf ppi ppk ppl ppp ppr ppx prc pre prf pri prk prl prp prr prx pxc pxe pxk pxl pxr rcc rce rcf rci rcl rcp rcr rcx re- rec ree ref rei rek rel rep rer rex rfc rfe rff rfi rfk rfl rfp rfr ric rie rif rii rik ril rip rir rix rkc rke rkf rkk rkp rlc rle rlf rli rll rlp rlr rpc rpe rpf rpi rpk rpl rpp rpr rpx rrc rrf rri rrk rrl rrp rrr rxp rxr xcf xci xcl xcp xcr xcx xee xel xep xer xex xfe xfl xfx xic xie xii xix xke xkl xlf xli xlr xpc xpe xpf xpl xpp xrc xrf xrx xxi xxl xxp xxx