-er ddd dde ddk ddo ddr ddu ddw de- ded dee dek deo der deu dew dke dkk dko dkr dku dkw dod doe dok doo dor dou dow drd dre drk dro drr dru drw dud due duk duo dur dwe dwo dwr dwu dww ed- edd ede edk edo edr edu edw eed eee eek eeo eer eew ekd eke eko ekr eku eo- eod eoe eok eoo eor eou eow erd ere erk ero err eru erw eu- eud eue eur ewd ewe ewk ewo ewr ewu eww kde kdk kdo kdr kdu ke- ked kee kek keo ker kew kke kkk kkr kku kod koe kok koo kor kou kow krd krk kro krr kru krw kud kue kuk kur kuu kw- kwd kwk kwo kww odd ode odo odr odu oed oee oeo oer okd oke okk oko okr oku okw oo- ood ook ooo oor oow or- ord ore ork oro orr oru ou- oud oue ouk ouo our owd owe owk owo owu oww rdd rde rdo rdr rdu re- red ree rek reo rer reu rew rke rkk rko rku rod roe rok roo ror rou row rrd rrk rrr rru rud rue ruk ruo rur ruu rwd rwe rwr rwu udd ude udk udo udr udu ued uee uer uew uke ukk ukr uku uod uoe uok uoo uor uow ur- urd ure urk uro urr uru urw uue uur uuu uwe uwr uww wdr wdu wed wee wek weo wer wew wkd wke wko wkr wkw wod woe wok woo wor wou wow wr- wrd wre wrk wro wrr wru wrw wud wue wuo wur wwd wwe wwo wwu www