-er -ol c-- ccc ccd cce ccf ccl cco ccr cct cdc cdd cde cdf cdl cdo cdr cdt ce- cec ced cee cef cel ceo cer cet cfc cfd cfe cff cfl cfo cfr cft cl- clc cld cle clf cll clo clr clt co- coc cod coe cof col coo cor cot crc crd cre crf crl cro crr crt ctc ctd cte ctf ctl cto ctr ctt dcc dcd dce dcf dcl dco dcr dct ddc ddd dde ddf ddl ddo ddr ddt de- dec ded dee def del deo der det dfc dfd dfe dff dfl dfo dfr dft dl- dlc dld dle dlf dll dlo dlr dlt doc dod doe dof dol doo dor dot drc drd dre drl dro drr drt dtc dtd dte dtf dtl dto dtr dtt ec- ecc ecd ece ecf ecl eco ecr ect ed- edc edd ede edf edl edo edr edt eec eed eee eef eel eeo eer eet ef- efc efd efe eff efl efo efr eft elc eld ele elf ell elo elr elt eo- eoc eod eoe eof eol eoo eor eot erc erd ere erf erl ero err ert etc etd ete etf etl eto etr ett fcc fcd fce fcf fcl fco fcr fct fdc fdd fde fdf fdl fdo fdr fdt fec fed fee fef fel feo fer fet ffc ffd ffe fff ffl ffo ffr fft flc fld fle flf fll flo flr flt foc foe fof fol foo for fot frc frd fre frf frl fro frr frt ftc ftd fte ftf ftl fto ftr ftt lcc lcd lce lcf lcl lco lcr lct ldc ldd lde ldf ldl ldo ldr ldt lec led lee lef lel leo ler let lfc lfd lfe lff lfl lfo lfr lft llc lld lle llf lll llo llr llt loc lod loe lof lol loo lor lot lrc lrd lrf lro lrr lrt ltc ltd lte ltf ltl lto ltr ltt oc- occ ocd ocf ocl oco ocr oct odc odd ode odf odl odo odr odt oec oed oee oef oel oeo oer oet of- ofc ofd ofe off ofl ofo ofr oft olc old ole olf oll olo olt oo- ooc ood oof ool ooo oor oot or- orc ord ore orf orl oro orr ort ot- otc otd ote otf otl oto otr ott rcc rcd rce rcf rcl rco rcr rct rdc rdd rde rdf rdl rdo rdr rdt re- rec red ree ref rel reo rer ret rfc rfd rfe rff rfl rfo rfr rft rlc rld rle rlf rll rlo rlr rlt roc rod roe rof rol roo ror rot rrc rrd rrf rrl rrr rrt rtc rtd rte rtf rtl rto rtr rtt tcc tcd tce tcf tcl tco tcr tct tdc tdd tde tdf tdl tdo tdr tdt te- tec ted tee tef tel teo ter tet tfc tfd tfe tff tfl tfo tfr tft tlc tld tle tlf tll tlo tlr tlt to- toc tod toe tof tol too tor tot trc trd tre trf trl tro trr trt ttc ttd tte ttf ttl tto ttr ttt