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: ['c', 'j', 't', 'I', '6691', 'M', 'w', '7227', '6913', 'c', 'N', '9301', '6377', '9497', '4711', 'S', '3827', '2523', 'r', '9081', '3159', 'f', 'g', 't', 'm']

3, 10, 20, 9, 6691, 13, 23, 7227, 6913, 3, 14, 9301, 6377, 9497, 4711, 19, 3827, 2523, 18, 9081, 3159, 6, 7, 20, 13