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: ['G', '4265', 'x', 'S', 's', 'l', 'B', 'U', 'O', '8817', 'F', 'o', 'R', 'A', 'Q', '6011', 'k', 'M', '2163', '1321', '1071']

7, 4265, 24, 19, 19, 12, 2, 21, 15, 8817, 6, 15, 18, 1, 17, 6011, 11, 13, 2163, 1321, 1071