ord_a = 97
    lines = []
    ord_last_char = size + ord_a - 1
    for num_chars in range(1, size + 1):
        left_str_list = [chr(ord_char) for ord_char in range(ord_last_char, ord_last_char - num_chars, -1)]
        string = '-'.join(left_str_list + left_str_list[-2::-1])
        line = string.center(4 * size - 3, '-')
        lines.append(line)
        print(line)

    for idx in range(len(lines) - 2, -1, -1):
        print(lines[idx])