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', 'n', 'f', 'I', '8171', '9863', 'v', 'X', 'F', 'P']

11, 14, 6, 9, 8171, 9863, 22, 24, 6, 16