-er c-- ccc ccd cce cck ccn ccr cct cdc cdd cde cdk cdn cdr cdt ce- cec ced cee cek cen cer cet ckc ckd ckt cn- cnc cnd cne cnn cnr cnt crc crd cre crk crn crr crt ctc ctd cte ctk ctn ctr ctt dcc dcd dce dck dcn dcr dct ddc ddd dde ddk ddn ddr ddt de- dec ded dee dek den der det dkc dke dkk dkr dkt dnc dnd dne dnk dnn dnr dnt drc drd dre drk drn drr drt dtc dtd dte dtk dtn dtr dtt ec- ecc ecd ece eck ecn ecr ect ed- edc edd ede edk edn edr edt eec eed eee eek een eer eet ekc ekd eke ekr ekt en- enc end ene enk enn enr ent erc erd ere erk ern err ert etc etd ete etk etn etr ett k-t kcc kcd kce kck kcn kcr kct kdc kde kdk kdr kdt ke- kec ked kee kek ken ker ket kkc kke kkk kkn kkr kkt kn- knc knd kne knk knn knr knt krc krd krk krn krr krt ktc kte ktk ktn ktr ktt ncc ncd nce nck ncn ncr nct ndc ndd nde ndk ndn ndr ndt ne- nec ned nee nek nen ner net nkc nke nkk nkn nkr nkt nnc nne nnk nnn nnt nrc nrd nre nrk nrn nrr nrt ntc ntd nte ntk ntn ntr ntt rcc rcd rce rcn rcr rct rdc rdd rde rdn rdr rdt re- rec red ree rek ren rer ret rkc rke rkk rkt rnc rnd rnn rnr rnt rrc rrd rrk rrn rrr rrt rtc rtd rte rtk rtn rtr rtt tcc tcd tce tck tcn tcr tct tdc tdd tde tdk tdn tdr tdt te- tec ted tee tek ten ter tet tkc tke tkk tkr tkt tnc tnd tne tnk tnn tnr tnt trc trd tre trk trn trr trt ttc ttd tte ttk ttn ttr ttt