Problem with 'and' in 'if' statement

[CoderMan]

Hello,

I'm trying to make a function that returns true if a list contains at least one of many predetermined letters in it. The code is as follows:

def check(x):
    if 'A' and 'B' and 'C' in x:
        return True
    elif 'A' and 'D' and 'G' in x:
        return True
    elif 'A' and 'E' and 'I' in x:
        return True
    elif 'I' and 'H' and 'G' in x:
        return True
    elif 'I' and 'F' and 'C' in x:
        return True
    elif 'D' and 'E' and 'F' in x:
        return True
    elif 'B' and 'E' and 'H' in x:
        return True
    else:
        return False
L = ['A', 'B', 'E', 'F']

print(check(L))

In this instance it should return false, since there are none of the series of three letters that I'm checking for, but it somehow returns true...

Am I using 'and' wrong?