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: ['9967', 'M', '1677', '3113', '8677', '699', '3247', '7921', 'w', '6475', '1829', 'q', 'v', '6187', 'x', 'g', 'W', 'i', '2757', '5575', '9269', '529', '8125', 'd', 'g', '4239', '7533', '3971', 'z', 'P', 'K', 'w', 'R', 'K', 'p', '6585']

9967, 13, 1677, 3113, 8677, 699, 3247, 7921, 23, 6475, 1829, 17, 22, 6187, 24, 7, 23, 9, 2757, 5575, 9269, 529, 8125, 4, 7, 4239, 7533, 3971, 26, 16, 11, 23, 18, 11, 16, 6585