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: ['j', '1861', '529', 'm', 'N', '2861', '4131', '6451', '6347', 'p', 'N', '183']

10, 1861, 529, 13, 14, 2861, 4131, 6451, 6347, 16, 14, 183