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: ['Z', 'k', 'j', '5525', 'q', 'Q', 'f', '9163', 'u', '9823', '9969', 't']

26, 11, 10, 5525, 17, 17, 6, 9163, 21, 9823, 9969, 20