-er c-- ccc ccd cce ccf ccn ccr ccu cdc cdd cde cdf cdn cdr cdu ce- cec ced cee cef cen cer ceu cfc cfd cfe cff cfn cfr cfu cn- cnc cnd cne cnf cnn cnr cnu crc crd cre crf crn crr cru cuc cud cue cuf cun cur cuu dcc dcd dce dcf dcn dcr dcu ddc ddd dde ddf ddn ddr ddu de- dec ded dee def den der deu dfc dfd dfe dff dfn dfr dfu dnc dnd dne dnf dnn dnr drc drd dre drn drr dru duc dud due duf dun dur ec- ecc ecd ece ecf ecn ecr ecu ed- edc edd ede edf edn edr edu eec eed eee eef een eer ef- efc efd efe eff efr en- enc end ene enf enn enr enu erc erd ere erf ern err eru eu- euc eud eue euf eun eur fcc fcd fce fcf fcn fcr fcu fdc fdd fde fdf fdn fdr fdu fec fed fee fef fen fer feu ffc ffd ffe fff ffn ffr ffu fnc fnd fne fnf fnn fnr fnu frc frd fre frf frn frr fru fud fue fuf fun fur fuu ncc ncd nce ncf ncn ncr ncu ndc ndd nde ndf ndn ndr ndu ne- nec ned nee nef nen ner neu nfc nfd nfe nff nfn nfr nfu nnc nne nnf nnn nnu nrc nrd nre nrf nrn nrr nru nuc nud nue nun nur nuu rcc rcd rce rcf rcn rcr rcu rdc rdd rde rdf rdn rdr rdu re- rec red ree ref ren rer reu rfc rfd rfe rff rfn rfr rfu rnc rnd rnn rnr rnu rrc rrd rrf rrn rrr rru ruc rud rue ruf run rur ruu ucc ucd uce ucf ucn ucr ucu udc udd ude udf udn udr udu uec ued uee uef uen uer ufc ufd ufe uff ufn ufr ufu un- unc und une unf unn unr unu ur- urc urd ure urf urn urr uru uuc uue uun uur uuu