#!/usr/bin/env python3
import sys
DNA_two = sys.argv[1]



DNA_two.count ('A')
DNA_two.count ('T')
DNA_two.count ('G')
DNA_two.count ('C')

print(DNA_two.count ('A'))
print(DNA_two.count ('T'))
print(DNA_two.count ('G'))
print(DNA_two.count ('C'))


