import sys, string

 

lines = []

for line in sys.stdin:

    lines.append(line)

 

text = ''.join(lines).lower()

     

for char in string.ascii_lowercase:

    print(("{} : {}".format(char, text.count(char))))

a=''

while True:

    try:

        str = input().lower()

        a+=str

    except:

        break

for i in range(97, 97 + 26):

    count = 0

    for j in a:

        if chr(i) == j:

            count += 1

    print((chr(i), ':', count))

import sys, string

lines = []
for line in sys.stdin:
    lines.append(line)
text = "".join(lines).lower()
for char in string.ascii_lowercase:
    print(("{} : {}".format(char, text.count(char))))

a = ""
while True:
    try:
        str = input().lower()
        a += str
    except:
        break
for i in range(97, 97 + 26):
    count = 0
    for j in a:
        if chr(i) == j:
            count += 1
    print((chr(i), ":", count))

-import sys, string - -lines = [] -for line in sys.stdin: -    lines.append(line) -text = "".join(lines).lower() -for char in string.ascii_lowercase: -    print(("{} : {}".format(char, text.count(char)))) +a = "" +while True: +    try: +        str = input().lower() +        a += str +    except: +        break +for i in range(97, 97 + 26): +    count = 0 +    for j in a: +        if chr(i) == j: +            count += 1 +    print((chr(i), ":", count))