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: ['m', '6193', 'f', 'V', '1749', 'D', 'p', '131', '6571', '9435', '7339', 'B', 'k', 'C', 'c', 'R', '355', 'R', 'H', '7737', '2639', '7289', '6799']

13, 6193, 6, 22, 1749, 4, 16, 131, 6571, 9435, 7339, 2, 11, 3, 3, 18, 355, 18, 8, 7737, 2639, 7289, 6799