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: ['6133', '2709', '4927', 'j', '5755', 'h', 'f', 'N', '4949', 'h', 'v', '5011', '9187', 'x', 'H', '5637', 'f', 'T', '1625', 'g']

6133, 2709, 4927, 10, 5755, 8, 6, 14, 4949, 8, 22, 5011, 9187, 24, 8, 5637, 6, 20, 1625, 7