k-p-r k-pop ko-ko kokko kokor kokot kokou kokur kokut kooru kopru korku korop koror korpo korro kortu koruk korup kotor kotto kottu kotur kouto kroot kropp krout krtok krupp kruto kukko kukok kukup kukur kupto kupur kurku kuruk kurup kuttu kutur okkur okoro okrut okuku okuru ooooo opoku opto- optot optto orkut orout ortok ortoo oruku oruro orutu otoku ototo otour otpor otrok ottur oukup ouoro outro outto po-po pokot pokou poopo poork poort popop poppo popup poro- porro porto portu porur potku potok potoo potop potor potrk potro potto pottu proor proot prop- propp propr propt prot- proto prout prtor ptprk ptpro ptprr ptprt ptpru puppo purku puro- purok putor putt- putto puttu putuo putup ro-ro rokkk rokot rokto rotko roto- rotor rotot rotto rouko routt rprop rptor rt-rk ruutu t-pop t-top tokko toko- tokor tokuo tokur topo- topor topot toppo topto topup torok torpo torro torto tortu toto- totok totoo totop totup touro tprot troop trop- tropo trott troup trout trupt truro ttttt tukur tuotu tupou turko turku turok turot turro turtu turup turut tutku tutor tutto tuuru u-pop ukpor ukrop upput uptop urkut urour urutu utro- utrop utror uttur uturu ututo uuork uuuuu