-er -ic c-- ccc ccd cce ccg cci ccl ccr cdc cdd cde cdg cdi cdl cdr ce- cec ced cee ceg cei cel cer cgc cgd cge cgg cgi cgl cgr ci- cic cid cie cig cii cil cir cl- clc cld cle clg cli cll clr crc crd cre crg cri crl crr dcc dcd dce dcg dci dcl dcr ddc ddd dde ddg ddi ddl ddr de- dec ded dee deg dei del der dgc dgd dge dgg dgi dgl dgr di- dic did die dig dii dil dir dl- dlc dld dle dlg dli dll dlr drc drd dre drg dri drl drr ec- ecc ecd ece ecg eci ecl ecr ed- edc edd ede edg edi edl edr eec eed eee eeg eel eer egc egd ege egg egi egl egr eic eid eie eig eii eil eir elc eld ele elg eli ell elr erc erd ere erg eri erl err g-d gcc gcd gce gcg gci gcl gcr gdc gdd gde gdi gdl gdr ge- gec ged gee geg gei gel ger ggc ggd ggg ggi ggr gic gid gie gig gii gil gir glc gld gle glg gli gll glr grc grd gre grg gri grl grr i-d icc icd ice icg ici icl icr idc idd ide idg idi idl idr ie- iec ied iee ieg iei iel ier igc igd ige igg igi igl igr iic iid iie iii iil iir il- ilc ild ile ilg ili ill ilr ir- irc ird ire irg iri irl irr lcc lcd lce lcg lci lcl lcr ldc ldd lde ldg ldi ldl ldr lec led lee leg lei lel ler lgc lgd lge lgg lgi lgl lgr lic lid lie lig lii lil lir llc lld lle llg lli lll llr lrc lrd lrg lri lrr rcc rcd rce rcg rci rcl rcr rdc rdd rde rdg rdi rdl rdr re- rec red ree reg rei rel rer rgc rgd rge rgg rgi rgr ric rid rie rig rii ril rir rlc rld rle rlg rli rll rlr rrc rrd rrg rri rrl rrr