file = open('26.txt')
s = file.readline()
s = s.replace('DBAC', '****')
for i in range(3, len(s)):
    if s[i-2] == 'D' and s[i-3] == '*':
        s = s.replace(s[i-2], '*')
        if s[i-1] == 'B':
            s = s.replace(s[i-1], '*')
            if s[i] == 'A':
                s = s.replace(s[i], '*')
    if s[i-3:i-1] != '*D' and s[i-1] != '*' and s[i] != '*':
        s = s.replace(s[i-2:i+1], ' ')
print(s)