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: ['2955', '7583', 'D', '8881', 'X', '6441', 'V', '6087', 'S', '3727', '2943', 'k', 'C', 'q', 'U', 'N', '9047', 'S', '7259', '3941', '2435']

2955, 7583, 4, 8881, 24, 6441, 22, 6087, 19, 3727, 2943, 11, 3, 17, 21, 14, 9047, 19, 7259, 3941, 2435