Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['4413', 's', 'j', '7025', 'W', 'W', 'u', 'q', '9973', '915', 'b', '5969', '5995', '8145', '5569', '5637', '7799', '3909', '1441', '7679', '4799', 'K', 'A', '7049', 'H', 'U', '6351', '8799', 'H', 'L', 'u', '3071', '447', '8285']

4413, 19, 10, 7025, 23, 23, 21, 17, 9973, 915, 2, 5969, 5995, 8145, 5569, 5637, 7799, 3909, 1441, 7679, 4799, 11, 1, 7049, 8, 21, 6351, 8799, 8, 12, 21, 3071, 447, 8285