-er -ic c-- ccc ccd cce cci cco ccr ccz cdc cdd cde cdi cdo cdr cdz ce- cec ced cee cei ceo cer cez ci- cic cid cie cii cio cir co- coc cod coe coi coo cor coz crc crd cre cri cro crr crz cz- czc czd cze czo dcc dcd dce dci dco dcr ddc ddd dde ddi ddo ddr ddz de- dec ded dee dei deo der dez di- dic did die dii dio dir diz doc dod doe doi doo dor doz drc drd dre dri dro drr drz dzd dze dzi dzo dzr ec- ecc ecd ece eci eco ecr ed- edc edd ede edi edo edr eec eed eee eeo eer eic eid eie eii eio eir eo- eoc eod eoe eoi eoo eor erc erd ere eri ero err erz eze ezo ezr ezz i-d icc icd ice ici ico icr icz idc idd ide idi ido idr ie- iec ied iee iei ier iic iid iie iii iio iir io- ioc iod ioe ioi ioo ior ir- irc ird ire iri iro irr ize izi izo izz o-i oc- occ ocd oci oco ocr ocz odc odd ode odi odo odr oec oed oee oei oeo oer oic oid oie oii oio oir oiz oo- ooc ood ooi ooo oor or- orc ord ore ori oro orr orz oze ozo ozz rcc rcd rce rci rco rcr rdc rdd rde rdi rdo rdr re- rec red ree rei reo rer rez ric rid rie rii rio rir riz roc rod roe roi roo ror roz rrc rrd rri rrr rze rzo zce zco zec zed zee zeo zer zez zid zie zio zir ziz zo- zoc zod zoe zoi zoo zor zro zzr zzz