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: ['297', '6515', '5045', '9295', 'z', 'd', '4183', 'a', 'I', '9595', '957', '5687', 'r', 't', 'N', '8997', '8289', '4897', 'u', '4199', '2449', '5275']

297, 6515, 5045, 9295, 26, 4, 4183, 1, 9, 9595, 957, 5687, 18, 20, 14, 8997, 8289, 4897, 21, 4199, 2449, 5275