-er c-- ccc ccd cce cco ccr cct ccu cdc cdd cde cdo cdq cdr cdt cdu ce- cec ced cee ceo ceq cer cet ceu co- coc cod coe coo coq cor cot cou cqc cqd cqo cqt crc crd cre cro crq crr crt cru ctc ctd cte cto ctq ctr ctt ctu cuc cud cue cuo cuq cur cut cuu dcc dcd dce dco dcr dct dcu ddc ddd dde ddo ddq ddr ddt ddu de- dec ded dee deo deq der det deu doc dod doe doo doq dor dot dou dqe drc drd dre dro drq drr drt dru dtc dtd dte dto dtr dtt dtu duc dud due duo dur dut ec- ecc ecd ece eco ecq ecr ect ecu ed- edc edd ede edo edr edt edu eec eed eee eeo eer eet eo- eoc eod eoe eoo eoq eor eot eou eqe eqq eqt equ erc erd ere ero erq err ert eru etc etd ete eto etr ett etu eu- euc eud eue eur eut oc- occ ocd oco ocr oct ocu odc odd ode odo odr odt odu oec oed oee oeo oer oet oo- ooc ood ooo oor oot oqo or- orc ord ore oro orr ort oru ot- otc otd ote oto otr ott otu ou- ouc oud oue ouo our out qcc qcd qco qct qdr qdt qec qed qee qeo qet qoo qor qqq qqu qrc qre qrt qru qtc qtd qto qtq qtr qu- qud que quo qur qut rcc rcd rce rco rcr rct rcu rdc rdd rde rdo rdr rdt rdu re- rec red ree reo req rer ret reu roc rod roe roo ror rot rou rqc rrc rrd rrq rrr rrt rru rtc rtd rte rto rtq rtr rtt rtu ruc rud rue ruo rur rut ruu tcc tcd tce tco tcr tct tcu tdc tdd tde tdo tdr tdt tdu te- tec ted tee teo teq ter tet teu to- toc tod toe too toq tor tot tou tqo trc trd tre tro trq trr trt tru ttc ttd tte tto ttr ttt ttu tuc tud tue tuo tur tut tuu ucc ucd uce uco ucr uct ucu udc udd ude udo udr udt udu uec ued uee uer uet uoc uod uoe uoo uor uot ur- urc urd ure uro urr urt uru utc utd ute uto utr utt utu uuc uue uur uut uuu