-er -ol c-- ccc ccd cce ccl cco ccr cct ccu cdc cdd cde cdl cdo cdr cdt cdu ce- cec ced cee cel ceo cer cet ceu cl- clc cld cle cll clo clr clt clu co- coc cod coe col coo cor cot cou crc crd cre crl cro crr crt cru ctc ctd cte ctl cto ctr ctt ctu cuc cud cue cul cuo cur cut cuu dcc dcd dce dcl dco dcr dct dcu ddc ddd dde ddl ddo ddr ddt ddu de- dec ded dee del deo der det deu dl- dlc dld dle dll dlo dlr dlt dlu doc dod doe dol doo dor dot dou drc drd dre drl dro drr drt dru dtc dtd dte dtl dto dtr dtt dtu duc dud due dul duo dur dut ec- ecc ecd ece ecl eco ecr ect ecu ed- edc edd ede edl edo edr edt edu eec eed eee eel eeo eer eet elc eld ele ell elo elr elt elu eo- eoc eod eoe eol eoo eor eot eou erc erd ere erl ero err ert eru etc etd ete etl eto etr ett etu eu- euc eud eue eul eur eut lcc lcd lce lcl lco lcr lct lcu ldc ldd lde ldl ldo ldr ldt ldu lec led lee lel leo ler let leu llc lld lle lll llo llr llt llu loc lod loe lol loo lor lot lou lrc lrd lro lrr lrt lru ltc ltd lte ltl lto ltr ltt ltu luc lud lue lul luo lur lut luu oc- occ ocd ocl oco ocr oct ocu odc odd ode odl odo odr odt odu oec oed oee oel oeo oer oet olc old ole oll olo olt olu oo- ooc ood ool ooo oor oot or- orc ord ore orl oro orr ort oru ot- otc otd ote otl oto otr ott otu ou- ouc oud oue oul ouo our out rcc rcd rce rcl rco rcr rct rcu rdc rdd rde rdl rdo rdr rdt rdu re- rec red ree rel reo rer ret reu rlc rld rle rll rlo rlr rlt rlu roc rod roe rol roo ror rot rou rrc rrd rrl rrr rrt rru rtc rtd rte rtl rto rtr rtt rtu ruc rud rue ruo rur rut ruu tcc tcd tce tcl tco tcr tct tcu tdc tdd tde tdl tdo tdr tdt tdu te- tec ted tee tel teo ter tet teu tlc tld tle tll tlo tlr tlt tlu to- toc tod toe tol too tor tot tou trc trd tre trl tro trr trt tru ttc ttd tte ttl tto ttr ttt ttu tuc tud tue tul tuo tur tut tuu ucc ucd uce ucl uco ucr uct ucu udc udd ude udl udo udr udt udu uec ued uee uel uer uet ulc uld ule ull ulo ulr ult ulu uoc uod uoe uol uoo uor uot ur- urc urd ure url uro urr urt uru utc utd ute utl uto utr utt utu uuc uue uur uut uuu