ceecee cheche chechu check- checko checky cheech cheeke cheekh cheeky cheepy chegoe cheppu cheppy cheuge choccy chocho chocky choghe chogye choke- chokey chokke chokyu chooce chooch chooke chopok choppy chopup chough chucho chuchu chucky chuggo chukey chukke chukku chukyo chuo chyche cocco- coccy- cockee cockey cockup cococo cogeco coochy coocoo coogee coohee cookee cookey cookoo cookop cookup coopee coopup cooyoo copeck cophee couche couchy coucke coughy coupee coyche coyphe coypou cuckoo cucuge cucuyo echeck echoey ecoche ecocho ecocyc ecopop eggcup epoche epopee eucope euphue eyecup gee-ho gee-up geegee gekkou geoeye gheyuk gocoop gohook gokcek googoo gougee guegue guekpe guoyue gyugye hecche heehee hegyko hehehe hehheh heopop hey-ho heyhoe heyyou hkcccc hockey hocooh hoeegh hoggee hohoho hokpok hoochy hoogee hoohoo hookey hookup hoopee hoopoe hoopoo hoouge hop-up houche houeko hucche huecco huh-uh hukkok huoguo huyghe hyecho hypeup hypho- hyukoh kecche keepup keochu keokee keokuk keough khocho khuyeh kockoy kogoue kohoku kok-oy kokkoh kokoku kokopo kokopu kokpek koochy kookoo kookyo koopoo kopeck kopeek kopoky koukou kucheh kuchek kuchug kukoc kupech kypho- kyukey o-hook occupy ocho ocupye ohheck ohohoh ohpooh ohyoko okopek okpoko oohooh oooooo oukoop oupeye oupoyo oy-kho pecche peckho peegee peepee peykuh phooey phyco- pochep pocock pocoyo poguey poochy poogye pookoo poopoo pop-up popeck popego popeye popopo popoyo poppop popych pouchy poupee poupko poupou pouppe pppppp pu-hoe puccho puckey puggee pukeko puppey puukko pycche pygope uh-huh upkeep yee-ho yegheg yehyeh yeo-ho yo-pop yockey yohkoh yohoho yoohoo yoyoyo yueyue yukhoe yuuguu