-er c-- ccc ccd cce ccf ccl ccn ccr cct cdc cdd cde cdf cdl cdn cdr cdt ce- cec ced cee cef cel cen cer cet cfc cfd cfe cff cfl cfn cfr cft cl- clc cld cle clf cll cln clr clt cn- cnc cnd cne cnf cnl cnn cnr cnt crc crd cre crf crl crn crr crt ctc ctd cte ctf ctl ctn ctr ctt dcc dcd dce dcf dcl dcn dcr dct ddc ddd dde ddf ddl ddn ddr ddt de- dec ded dee def del den der det dfc dfd dfe dff dfl dfn dfr dft dl- dlc dld dle dlf dll dlr dlt dnc dnd dne dnf dnl dnn dnr dnt drc drd dre drl drn drr drt dtc dtd dte dtf dtl dtn dtr dtt ec- ecc ecd ece ecf ecl ecn ecr ect ed- edc edd ede edf edl edn edr edt eec eed eee eef eel een eer eet ef- efc efd efe eff efl efr eft elc eld ele elf ell eln elr elt en- enc end ene enf enl enn enr ent erc erd ere erf erl ern err ert etc etd ete etf etl etn etr ett fcc fcd fce fcf fcl fcn fcr fct fdc fdd fde fdf fdl fdn fdr fdt fec fed fee fef fel fen fer fet ffc ffd ffe fff ffl ffn ffr fft flc fld fle flf fll fln flr flt fnc fnd fne fnf fnl fnn fnr fnt frc frd fre frf frl frn frr frt ftc ftd fte ftf ftl ftn ftr ftt lcc lcd lce lcf lcl lcn lcr lct ldc ldd lde ldf ldl ldn ldr ldt lec led lee lef lel len ler let lfc lfd lfe lff lfl lfn lfr lft llc lld lle llf lll lln llr llt lnc lnd lne lnl lnn lnr lnt lrc lrd lrf lrn lrr lrt ltc ltd lte ltf ltl ltr ltt ncc ncd nce ncf ncl ncn ncr nct ndc ndd nde ndf ndl ndn ndr ndt ne- nec ned nee nef nel nen ner net nfc nfd nfe nff nfl nfn nfr nft nlc nld nle nlf nll nln nlr nlt nnc nne nnf nnl nnn nnt nrc nrd nre nrf nrl nrn nrr nrt ntc ntd nte ntf ntn ntr ntt rcc rcd rce rcf rcl rcn rcr rct rdc rdd rde rdf rdl rdn rdr rdt re- rec red ree ref rel ren rer ret rfc rfd rfe rff rfl rfn rfr rft rlc rld rle rlf rll rln rlr rlt rnc rnd rnn rnr rnt rrc rrd rrf rrl rrn rrr rrt rtc rtd rte rtf rtl rtn rtr rtt tcc tcd tce tcf tcl tcn tcr tct tdc tdd tde tdf tdl tdn tdr tdt te- tec ted tee tef tel ten ter tet tfc tfd tfe tff tfl tfn tfr tft tlc tld tle tlf tll tln tlr tlt tnc tnd tne tnf tnl tnn tnr tnt trc trd tre trf trl trn trr trt ttc ttd tte ttf ttl ttn ttr ttt