import re
s = '0KKoFeunLBVJxVeUXvlGAZsTrKJ3eaFgnfI u tebya rooki eez zhorpy rustoot'
print(re.sub(r'\s*\b(?=\w*(?:[a-z][A-Z]+[a-z]|[A-Z][a-z]+[A-Z]))\w+', '', s))
aW1wb3J0IHJlCnMgPSAnMEtLb0ZldW5MQlZKeFZlVVh2bEdBWnNUcktKM2VhRmduZkkgdSB0ZWJ5YSByb29raSBlZXogemhvcnB5IHJ1c3Rvb3QnCnByaW50KHJlLnN1YihyJ1xzKlxiKD89XHcqKD86W2Etel1bQS1aXStbYS16XXxbQS1aXVthLXpdK1tBLVpdKSlcdysnLCAnJywgcykp