-er c-- ccc ccd cce ccf cco ccr cct ccu cdc cdd cde cdf cdo cdr cdt cdu ce- cec ced cee cef ceo cer cet ceu cfc cfd cfe cff cfo cfr cft cfu co- coc cod coe cof coo cor cot cou crc crd cre crf cro crr crt cru ctc ctd cte ctf cto ctr ctt ctu cuc cud cue cuf cuo cur cut cuu dcc dcd dce dcf dco dcr dct dcu ddc ddd dde ddf ddo ddr ddt ddu de- dec ded dee def deo der det deu dfc dfd dfe dff dfo dfr dft dfu doc dod doe dof doo dor dot dou drc drd dre dro drr drt dru dtc dtd dte dtf dto dtr dtt dtu duc dud due duf duo dur dut ec- ecc ecd ece ecf eco ecr ect ecu ed- edc edd ede edf edo edr edt edu eec eed eee eef eeo eer eet ef- efc efd efe eff efo efr eft eo- eoc eod eoe eof eoo eor eot eou erc erd ere erf ero err ert eru etc etd ete etf eto etr ett etu eu- euc eud eue euf eur eut fcc fcd fce fcf fco fcr fct fcu fdc fdd fde fdf fdo fdr fdt fdu fec fed fee fef feo fer fet feu ffc ffd ffe fff ffo ffr fft ffu foc foe fof foo for fot fou frc frd fre frf fro frr frt fru ftc ftd fte ftf fto ftr ftt ftu fud fue fuf fuo fur fut fuu oc- occ ocd ocf oco ocr oct ocu odc odd ode odf odo odr odt odu oec oed oee oef oeo oer oet of- ofc ofd ofe off ofo ofr oft ofu oo- ooc ood oof ooo oor oot or- orc ord ore orf oro orr ort oru ot- otc otd ote otf oto otr ott otu ou- ouc oud oue ouf ouo our out rcc rcd rce rcf rco rcr rct rcu rdc rdd rde rdf rdo rdr rdt rdu re- rec red ree ref reo rer ret reu rfc rfd rfe rff rfo rfr rft rfu roc rod roe rof roo ror rot rou rrc rrd rrf rrr rrt rru rtc rtd rte rtf rto rtr rtt rtu ruc rud rue ruf ruo rur rut ruu tcc tcd tce tcf tco tcr tct tcu tdc tdd tde tdf tdo tdr tdt tdu te- tec ted tee tef teo ter tet teu tfc tfd tfe tff tfo tfr tft tfu to- toc tod toe tof too tor tot tou trc trd tre trf tro trr trt tru ttc ttd tte ttf tto ttr ttt ttu tuc tud tue tuf tuo tur tut tuu ucc ucd uce ucf uco ucr uct ucu udc udd ude udf udo udr udt udu uec ued uee uef uer uet ufc ufd ufe uff ufo ufr uft ufu uoc uod uoe uoo uor uot ur- urc urd ure urf uro urr urt uru utc utd ute utf uto utr utt utu uuc uue uur uut uuu