-er -ol c-- ccc ccd cce ccl cco ccr cct cdc cdd cde cdl cdo cdr cdt ce- cec ced cee cel ceo cer cet cl- clc cld cle cll clo clr clt co- coc cod coe col coo cor cot crc crd cre crl cro crr crt ctc ctd cte ctl cto ctr ctt dcc dcd dce dcl dco dcr dct ddc ddd dde ddl ddo ddr ddt de- dec ded dee del deo der det dl- dlc dld dle dll dlo dlr dlt doc dod doe dol doo dor dot drc drd dre drl dro drr drt dtc dtd dte dtl dto dtr dtt ec- ecc ecd ece ecl eco ecr ect ed- edc edd ede edl edo edr edt eec eed eee eel eeo eer eet elc eld ele ell elo elr elt eo- eoc eod eoe eol eoo eor eot erc erd ere erl ero err ert etc etd ete etl eto etr ett lcc lcd lce lcl lco lcr lct ldc ldd lde ldl ldo ldr ldt lec led lee lel leo ler let llc lld lle lll llo llr llt loc lod loe lol loo lor lot lrc lrd lro lrr lrt ltc ltd lte ltl lto ltr ltt oc- occ ocd ocl oco ocr oct odc odd ode odl odo odr odt oec oed oee oel oeo oer oet olc old ole oll olo olt oo- ooc ood ool ooo oor oot or- orc ord ore orl oro orr ort ot- otc otd ote otl oto otr ott rcc rcd rce rcl rco rcr rct rdc rdd rde rdl rdo rdr rdt re- rec red ree rel reo rer ret rlc rld rle rll rlo rlr rlt roc rod roe rol roo ror rot rrc rrd rrl rrr rrt rtc rtd rte rtl rto rtr rtt tcc tcd tce tcl tco tcr tct tdc tdd tde tdl tdo tdr tdt te- tec ted tee tel teo ter tet tlc tld tle tll tlo tlr tlt to- toc tod toe tol too tor tot trc trd tre trl tro trr trt ttc ttd tte ttl tto ttr ttt