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: ['L', 'M', 'n', 'L', 'o', '8767', '7763', 'w', '2383', 'j']

12, 13, 14, 12, 15, 8767, 7763, 23, 2383, 10