-er c-- ccc ccd cce ccr cct ccw cdc cdd cde cdr cdt cdw ce- cec ced cee cer cet cew crc crd cre crr crt crw ctc ctd cte ctr ctt ctw cw- cwc cwd cwe cwr cwt dcc dcd dce dcr dct dcw ddc ddd dde ddr ddt ddw de- dec ded dee der det dew drc drd dre drr drt drw dtc dtd dte dtr dtt dtw dwc dwe dwr dwt dww ec- ecc ecd ece ecr ect ecw ed- edc edd ede edr edt edw eec eed eee eer eet eew erc erd ere err ert erw etc etd ete etr ett etw ewc ewd ewe ewr ewt eww rcc rcd rce rcr rct rcw rdc rdd rde rdr rdt re- rec red ree rer ret rew rrc rrd rrr rrt rtc rtd rte rtr rtt rtw rwc rwd rwe rwr tcc tcd tce tcr tct tcw tdc tdd tde tdr tdt tdw te- tec ted tee ter tet tew trc trd tre trr trt trw ttc ttd tte ttr ttt ttw twc twd twe twr twt tww wcc wcd wce wcr wct wcw wdc wdr wdt wec wed wee wer wet wew wr- wrc wrd wre wrr wrt wrw wtc wtd wtr wtt wtw wwc wwd wwe wwt www