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: ['u', 'u', 'w', 'Q', '6847', 'A', '8075', 'k', '5587', 'z', 'W', '9659', 'N', 'd', 'q', '1133', 't', 'g', 'R', '3869', 'P', 'K', 'w', '8705', '6463', 'Y', 'a', '1039', 'w', 'M', '8403', 'u', 'e']

21, 21, 23, 17, 6847, 1, 8075, 11, 5587, 26, 23, 9659, 14, 4, 17, 1133, 20, 7, 18, 3869, 16, 11, 23, 8705, 6463, 25, 1, 1039, 23, 13, 8403, 21, 5