-er -ic c-- ccc ccd cce cci cck ccl ccp ccr cdc cdd cde cdi cdk cdl cdp cdr ce- cec ced cee cei cek cel cep cer ci- cic cid cie cii cik cil cip cir ckc ckd cki cl- clc cld cle cli clk cll clp clr cpc cpd cpe cpi cpk cpl cpp cpr crc crd cre cri crk crl crp crr dcc dcd dce dci dck dcl dcp dcr ddc ddd dde ddi ddk ddl ddp ddr de- dec ded dee dei dek del dep der di- dic did die dii dik dil dip dir dkc dke dki dkk dkl dkp dkr dl- dlc dld dle dli dlk dll dlp dlr dpc dpd dpe dpi dpk dpl dpp dpr drc drd dre dri drk drl drp drr ec- ecc ecd ece eci eck ecl ecr ed- edc edd ede edi edk edl edp edr eec eed eee eek eel eep eer eic eid eie eii eik eil eip eir ekc ekd eke eki ekl ekp ekr elc eld ele eli elk ell elp elr ep- epc epd epe epi epl epp epr erc erd ere eri erk erl erp err i-d icc icd ice ici ick icl icp icr idc idd ide idi idk idl idp idr ie- iec ied iee iei iek iel iep ier iic iid iie iii iil iip iir ikc ike iki ikk ikl ikr il- ilc ild ile ili ilk ill ilp ilr ipc ipd ipe ipi ipl ipp ipr ir- irc ird ire iri irk irl irp irr kcc kcd kce kci kck kcl kcp kcr kdc kde kdk kdl kdp kdr ke- kec ked kee kei kek kel kep ker kic kid kie kii kik kil kip kir kkc kke kki kkk kkl kkp kkr kl- klc kld kli klr kpc kpd kpe kpi kpk kpl kpp kpr krc krd kri krk krl krp krr l-p lcc lcd lce lci lck lcl lcp lcr ldc ldd lde ldi ldk ldl ldp ldr lec led lee lei lek lel lep ler lic lid lie lii lik lil lip lir lkl lkp lkr llc lld lle lli llk lll llp llr lpc lpd lpe lpi lpk lpl lpp lpr lrc lrd lri lrk lrp lrr p-p pcc pcd pce pci pck pcl pcp pcr pdc pdd pde pdi pdk pdl pdp pdr pec ped pee pei pek pel pep per pic pid pie pii pik pil pip pir pkc pkd pke pki pkl pkp pkr plc pld ple pli plk pll plp plr ppc ppd ppe ppi ppk ppl ppp ppr prc prd pre pri prk prl prp prr rcc rcd rce rci rcl rcp rcr rdc rdd rde rdi rdl rdp rdr re- rec red ree rei rek rel rep rer ric rid rie rii rik ril rip rir rkc rke rkk rkp rlc rld rle rli rll rlp rlr rpc rpd rpe rpi rpk rpl rpp rpr rrc rrd rri rrk rrl rrp rrr