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: ['k', 'u', '7353', '7655', 'j', 'M', '6081', 'I', '7315', '2511', '6613', 'y', 'P', 'P', '3241', '441', 'i', 'o', '8597', 'b', 'K', 'J', 'r']

11, 21, 7353, 7655, 10, 13, 6081, 9, 7315, 2511, 6613, 25, 16, 16, 3241, 441, 9, 15, 8597, 2, 11, 10, 18