
    Write a function that analyzes pairs of transaction security codes to identify potential fraudulent patterns by counting how many pairs of codes generate normal (even) XOR patterns. Given a list of security codes from multi-channel banking activities, determine the number of code pairs that, when XORed together, result in an even number, indicating standard transaction behavior.
    

    
def find_even_pair(A):
    """
    Write a function that analyzes pairs of transaction security codes to identify potential fraudulent patterns by counting how many pairs of codes generate normal (even) XOR patterns. Given a list of security codes from multi-channel banking activities, determine the number of code pairs that, when XORed together, result in an even number, indicating standard transaction behavior.
    

    """
def find_even_pair(A):
    """
    Write a function that analyzes pairs of transaction security codes to identify potential fraudulent patterns by counting how many pairs of codes generate normal (even) XOR patterns. Given a list of security codes from multi-channel banking activities, determine the number of code pairs that, when XORed together, result in an even number, indicating standard transaction behavior.
    

    """
    count = 0
    for i in range(0, len(A)):
        for j in range(i + 1, len(A)):
            if (A[i] ^ A[j]) % 2 == 0:
                count += 1
    return count