-er c-- ccc ccd cce ccn ccr ccz cdc cdd cde cdn cdr cdz ce- cec ced cee cen cer cez cn- cnc cnd cne cnn cnr crc crd cre crn crr crz cz- czc czd cze dcc dcd dce dcn dcr ddc ddd dde ddn ddr ddz de- dec ded dee den der dez dnc dnd dne dnn dnr dnz drc drd dre drn drr drz dzd dze dzr ec- ecc ecd ece ecn ecr ed- edc edd ede edn edr eec eed eee een eer en- enc end ene enn enr enz erc erd ere ern err erz eze ezr ezz ncc ncd nce ncn ncr ndc ndd nde ndn ndr ne- nec ned nee nen ner nez nnc nne nnn nnz nrc nrd nre nrn nrr nrz nzd nze nzz rcc rcd rce rcn rcr rdc rdd rde rdn rdr re- rec red ree ren rer rez rnc rnd rnn rnr rnz rrc rrd rrn rrr rze zce zec zed zee zen zer zez znc znd zne znn zzr zzz