-er c-- ccc ccd cce ccn ccr ccv ccz cdc cdd cde cdn cdr cdv cdz ce- cec ced cee cen cer cev cez cn- cnc cnd cne cnn cnr cnv crc crd cre crn crr crv crz cvc cvd cve cvn cvr cvv cvz cz- czc czd cze dcc dcd dce dcn dcr dcv ddc ddd dde ddn ddr ddz de- dec ded dee den der dev dez dnc dnd dne dnn dnr dnz drc drd dre drn drr drv drz dvc dvd dve dvn dvr dzd dze dzr ec- ecc ecd ece ecn ecr ecv ed- edc edd ede edn edr eec eed eee een eer eev en- enc end ene enn enr env enz erc erd ere ern err erv erz evc evd eve evn evr evv eze ezr ezz ncc ncd nce ncn ncr ncv ndc ndd nde ndn ndr ndv ne- nec ned nee nen ner nev nez nnc nne nnn nnv nnz nrc nrd nre nrn nrr nrv nrz nvc nvd nve nvn nvv nzd nze nzz rcc rcd rce rcn rcr rcv rdc rdd rde rdn rdr rdv re- rec red ree ren rer rev rez rnc rnd rnn rnr rnv rnz rrc rrd rrn rrr rvc rvd rve rvn rvr rvv rze v-e vcc vcd vce vcn vcr vdc vdd vde vdr vdv vec ved vee ven ver vez vn- vnd vnr vnv vrc vrd vre vrn vrr vvc vvr vvv vvz vzn zce zdv zec zed zee zen zer zev zez znc znd zne znn zzr zzz