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: ['7347', 'B', 'h', '8159', '1299', '7597', 'Z', '4923', '575', 'c', 'Y', '8333', '6301', 'c']

7347, 2, 8, 8159, 1299, 7597, 26, 4923, 575, 3, 25, 8333, 6301, 3