import re

s = input()
regex = r'\w+, \w+ (and|or) \w+'
ends = [0]
for match in re.finditer(regex, s):
    ends.append(s.rfind(' and ', match.start(), match.end()) + 1 or s.rfind(' or ', match.start(), match.end()) + 1)
    ends[-1] -= 1
ends.append(len(s))
s_new = []
for i in range(len(ends) - 1):
    s_new.append(s[ends[i]:ends[i + 1]])
print(','.join(s_new))