import re
def func(string):
a = re.sub('[a-zA-Z]',',',string)
lst = [i for i in a.split(',') if i != ""]
mi = 0
for i in range(1,len(lst)):
if len(lst[i])>len(lst[mi]):
mi = i
for i in range(len(lst)):
if len(lst[i])==len(lst[mi]):
print(lst[i],end='')
print(f',{len(lst[mi])}')
while 1:
try:
string = input()
func(string)
except:
break

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