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: ['S', '9045', 't', '5295', 'f', 'I', '3665', '1081', 'G', '8727', '4303', '7329', '269', 'H', 'G', 'T', '279', '7527', '1711', '3495', '39', 'V', '3595', '5965', '515', 'M', '6721', '5481', '6695', '8925', 'L', 'c', '6111', 'A', 'k', '1117', 'R', '9247', '9045', '1471']

19, 9045, 20, 5295, 6, 9, 3665, 1081, 7, 8727, 4303, 7329, 269, 8, 7, 20, 279, 7527, 1711, 3495, 39, 22, 3595, 5965, 515, 13, 6721, 5481, 6695, 8925, 12, 3, 6111, 1, 11, 1117, 18, 9247, 9045, 1471