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: ['L', 'F', 'Y', '2333', '2875', 'x', 'C', 'R', 'N', '6455', '4651', '9645', '5603', '1113', 'X', '3169', 'T', 'M', '7231', 'A', '6259', 'B', 'B', 'V', '2427', '4773', 'H', '8151']

12, 6, 25, 2333, 2875, 24, 3, 18, 14, 6455, 4651, 9645, 5603, 1113, 24, 3169, 20, 13, 7231, 1, 6259, 2, 2, 22, 2427, 4773, 8, 8151