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: ['1577', '7767', '9491', '7773', '3063', '6627', '3625', 'B', '4933', 'p', '4647', '6375', 'H', '6577', 'c', 'd', '9367', '493', '2419', '979', 'u', 'X', 'h', '5611', 'y', '9647', 'F', '5723', '8825', '7831', '349', '4859', '6711', '4703']

1577, 7767, 9491, 7773, 3063, 6627, 3625, 2, 4933, 16, 4647, 6375, 8, 6577, 3, 4, 9367, 493, 2419, 979, 21, 24, 8, 5611, 25, 9647, 6, 5723, 8825, 7831, 349, 4859, 6711, 4703