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: ['103', '5633', 'A', '5693', '739', '6241', '1049', 'k']

103, 5633, 1, 5693, 739, 6241, 1049, 11