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: ['3245', '6225', 'k', '6079', '6563', '3129', 'T', 'g', 'R', 'j', '5923', 'o', '6933', '7597', 'j', 'M']

3245, 6225, 11, 6079, 6563, 3129, 20, 7, 18, 10, 5923, 15, 6933, 7597, 10, 13