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: ['b', '3235', '2525', '6117', 'h', 'm', 'S', 'F', 'e', 'r', 'Z', '267', 'Z', '7845', 'P', '875', 'r', 'i', 'c', 'U', '8401', '9407', 'l', '3627', '7377', '511', '3397', 'M', '7483', 'o', 'V', 'T', 'P', 'N', '1469', '5743', 'I', '9697', '9533', 'L']

2, 3235, 2525, 6117, 8, 13, 19, 6, 5, 18, 26, 267, 26, 7845, 16, 875, 18, 9, 3, 21, 8401, 9407, 12, 3627, 7377, 511, 3397, 13, 7483, 15, 22, 20, 16, 14, 1469, 5743, 9, 9697, 9533, 12