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: ['1141', '9875', 'B', 'r', '7979', '4925', 'h', '7415', '675', 'C', 'v']

1141, 9875, 2, 18, 7979, 4925, 8, 7415, 675, 3, 22