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: ['c', '7683', '1905', 'I', '3693', 'C', 'l', '1095', 'D', '5047', 'B', 'X', 'q', '8303', '9645', '2601', 'K', 'c', 'G', 'Y', '9831', '6575', '117', 'W', 'U', 'U', '8341', '6749', 'P', 'z', 'Q', 'd', 'V']

3, 7683, 1905, 9, 3693, 3, 12, 1095, 4, 5047, 2, 24, 17, 8303, 9645, 2601, 11, 3, 7, 25, 9831, 6575, 117, 23, 21, 21, 8341, 6749, 16, 26, 17, 4, 22