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: ['7323', '299', 's', 'v', 't', 'C', 'X', 'v', 'o', '7969', '3407', '133', '5083', 'F', 'm']

7323, 299, 19, 22, 20, 3, 24, 22, 15, 7969, 3407, 133, 5083, 6, 13