
    Write a function that analyzes a list of transaction security codes and determines how many pairs of codes, when XORed together, produce even values, indicating potentially legitimate transaction patterns in the fraud detection system. The function should examine all possible pairs of security codes in the list and return the total count of pairs that meet this security criterion.
    

    
def find_even_pair(A):
    """
    Write a function that analyzes a list of transaction security codes and determines how many pairs of codes, when XORed together, produce even values, indicating potentially legitimate transaction patterns in the fraud detection system. The function should examine all possible pairs of security codes in the list and return the total count of pairs that meet this security criterion.
    

    """
def find_even_pair(A):
    """
    Write a function that analyzes a list of transaction security codes and determines how many pairs of codes, when XORed together, produce even values, indicating potentially legitimate transaction patterns in the fraud detection system. The function should examine all possible pairs of security codes in the list and return the total count of pairs that meet this security criterion.
    

    """
    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