#!/usr/bin/python3
import re
def is_number(test):
pattern = re.compile(r'^([A-Za-ĆŁŚŹŻ]\w*[^a]|Kosma|Jarema) [A-Za-ĆŁŚŹŻ]\w*$')
result = re.match(pattern, test)
if result:
return "yes"
else:
return "no"
for line in sys.stdin:
print(is_number(line))
