-er c-- ccc ccd cce cck cco ccr ccw cdc cdd cde cdk cdo cdr cdw ce- cec ced cee cek ceo cer cew ckc ckd cko ckw co- coc cod coe cok coo cor cow crc crd cre crk cro crr crw cw- cwc cwd cwe cwk cwo cwr dcc dcd dce dck dco dcr dcw ddc ddd dde ddk ddo ddr ddw de- dec ded dee dek deo der dew dkc dke dkk dko dkr dkw doc dod doe dok doo dor dow drc drd dre drk dro drr drw dwc dwe dwo dwr dww ec- ecc ecd ece eck eco ecr ecw ed- edc edd ede edk edo edr edw eec eed eee eek eeo eer eew ekc ekd eke eko ekr eo- eoc eod eoe eok eoo eor eow erc erd ere erk ero err erw ewc ewd ewe ewk ewo ewr eww kcc kcd kce kck kcr kdc kde kdk kdo kdr ke- kec ked kee kek keo ker kew kkc kke kkk kkr koc kod koe kok koo kor kow krc krd krk kro krr krw kw- kwc kwd kwk kwo kww oc- occ ocd ock oco ocr ocw odc odd ode odo odr oec oed oee oeo oer okc okd oke okk oko okr okw oo- ooc ood ook ooo oor oow or- orc ord ore ork oro orr owc owd owe owk owo oww rcc rcd rce rco rcr rcw rdc rdd rde rdo rdr re- rec red ree rek reo rer rew rkc rke rkk rko roc rod roe rok roo ror row rrc rrd rrk rrr rwc rwd rwe rwr wcc wcd wce wck wco wcr wcw wdc wdr wec wed wee wek weo wer wew wkc wkd wke wko wkr wkw woc wod woe wok woo wor wow wr- wrc wrd wre wrk wro wrr wrw wwc wwd wwe wwo www