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: ['K', '7593', 'x', '6163', '2205', '9099', '8669', 'T', '7509', 'E']

11, 7593, 24, 6163, 2205, 9099, 8669, 20, 7509, 5