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: ['1795', '1289', 'b', '4705', 'D', '7437', '9711', '2775', 'a', 'l', '4155', 'u', 'g', 'T', '6659', '9885', 'J', 'y', '9555', '8575', '2531', '57', '9125', 'E', '4529', '4693', 'z', '9391', '3325', 'X', '4163', '5171', '4765', '3891', 'N', 'I', '475']

1795, 1289, 2, 4705, 4, 7437, 9711, 2775, 1, 12, 4155, 21, 7, 20, 6659, 9885, 10, 25, 9555, 8575, 2531, 57, 9125, 5, 4529, 4693, 26, 9391, 3325, 24, 4163, 5171, 4765, 3891, 14, 9, 475