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: ['7241', 'o', '1663', '6347', 'p', '1161', '6831', '1047', 'g', 'k', 'u', '2177', '5179', 'F', 't', '8269', '3853', '2841', '4035', '4539', '491', 'q', 'z', '2615', 'b', 'G', 'E', '3241', 'i', '7071', 'R', '9349', '3097', 'n']

7241, 15, 1663, 6347, 16, 1161, 6831, 1047, 7, 11, 21, 2177, 5179, 6, 20, 8269, 3853, 2841, 4035, 4539, 491, 17, 26, 2615, 2, 7, 5, 3241, 9, 7071, 18, 9349, 3097, 14