-er c-- ccc ccd cce ccf ccn cco ccr cdc cdd cde cdf cdn cdo cdr ce- cec ced cee cef cen ceo cer cfc cfd cfe cff cfn cfo cfr cn- cnc cnd cne cnf cnn cno cnr co- coc cod coe cof con coo cor crc crd cre crf crn cro crr dcc dcd dce dcf dcn dco dcr ddc ddd dde ddf ddn ddo ddr de- dec ded dee def den deo der dfc dfd dfe dff dfn dfo dfr dnc dnd dne dnf dnn dno dnr doc dod doe dof don doo dor drc drd dre drn dro drr ec- ecc ecd ece ecf ecn eco ecr ed- edc edd ede edf edn edo edr eec eed eee eef een eeo eer ef- efc efd efe eff efo efr en- enc end ene enf enn eno enr eo- eoc eod eoe eof eon eoo eor erc erd ere erf ern ero err fcc fcd fce fcf fcn fco fcr fdc fdd fde fdf fdn fdo fdr fec fed fee fef fen feo fer ffc ffd ffe fff ffn ffo ffr fnc fnd fne fnf fnn fnr foc foe fof fon foo for frc frd fre frf frn fro frr ncc ncd nce ncf ncn nco ncr ndc ndd nde ndf ndn ndo ndr ne- nec ned nee nef nen neo ner nfc nfd nfe nff nfn nfo nfr nnc nne nnf nnn nno no- noc nod noe nof non noo nor nrc nrd nre nrf nrn nro nrr oc- occ ocd ocf ocn oco ocr odc odd ode odf odn odo odr oec oed oee oef oen oeo oer of- ofc ofd ofe off ofn ofo ofr on- onc ond one onf onn ono onr oo- ooc ood oof oon ooo oor or- orc ord ore orf orn oro orr rcc rcd rce rcf rcn rco rcr rdc rdd rde rdf rdn rdo rdr re- rec red ree ref ren reo rer rfc rfd rfe rff rfn rfo rfr rnc rnd rnn rno rnr roc rod roe rof ron roo ror rrc rrd rrf rrn rrr