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: ['P', '2185', 'J', '8719', 'P', 'a', 'B', 'b', 'j', '4205', 'x', '6633', 'r', '3131', '9895', '4173', 'W', '9453', '4381', 'x', 'j', '2991', '8813', 'm', 't', 'A', '9445', 'w', '5363', 'p', 'i', '7933']

16, 2185, 10, 8719, 16, 1, 2, 2, 10, 4205, 24, 6633, 18, 3131, 9895, 4173, 23, 9453, 4381, 24, 10, 2991, 8813, 13, 20, 1, 9445, 23, 5363, 16, 9, 7933