eeee eeke eero ekek eker ekur ekwe eore erer erew erke eroe eroo erre erro erur euer eur- eure euro euwe ewer ewew ewok ewre keek keer keke keko keku keok ker- kere kerk kero kerr keru keur kewe kewr kkkk kkoo kkor kkow kkre kkrk kkro kkrr kkuu kkwe kkwk koke kokk koko kokr koku kook kooo koor koou kore kork koro korr koru koue kour kouu kouw kowe kowr kree krek kreo kreu krew krke krkk krko krkr krku krkw kroe krok kroo kror krow krre krrk krro krrr krrw krue kruk krur krwk krwr kuek kueu kuke kukk kuku kuok kuoo kuow kure kurk kuro kurr kuru kuuk kuur kuuu kuwe kuwr kuww kwee kwkk kwkr kwkw kwok kwor kwow kwre kwrk kwro kwrr kwru kwrw kwur kwwk kwwr o-eo oere oker okko okok okor okre okro okur ooer ooku oooo oore ore- orek oreo orer orke orko oro- oroe orok oror orro orwe orwo ouer our- oure ouro ouu- ouwe ower owoe owow owre owur reek reke reko reou rere rero reru reue reuk reuu rewe roer roke rokk roko rokr roku rook roor rore rork roro roru roue rouk rowe rowk rowr roww rrrr ruer ruke rukk ruku ruok rure ruro ruru ruwe uewe ukek ukeu ukko ukok ukur uoke uor- uore ure- urke uro- urok uroo urre uruk urur uuuu uwer week weeo weer weeu weke weko wekr weku wekw weok weow wer- were werk wero werr werw wewe wewo wkeu wkew wkko wkkr wkkw wkok wkoo wkor wkow wkre wkrk wkro wkrr wkru wkue woer woke wokk woko wokr woku wokw wook woow wore work woro worr worw wouk wour wouw wowe wowo woww wree wrek wrer wrew wrkk wrko wrkr wrku wrkw wrok wroo wrow wrre wrrk wrro wrrw wrwr wuke wur- wuuu wuwe wweo wwer wwkr wwku wwor wwow wwre wwrk wwrr wwru wwrw wwwe wwwk wwwr wwww