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: ['J', 'V', 'v', '7119', '9747', '6175', 'p', 'y', '2421', 'i', '2733', '8335', 'p', 'D', '3695', 'U', 'b', '355']

10, 22, 22, 7119, 9747, 6175, 16, 25, 2421, 9, 2733, 8335, 16, 4, 3695, 21, 2, 355