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.

['3731', 'V', 'C', 'S', '8601', '2753', '9015', '7233', '3903', 'v', '9723', 'J', '5227', 'N', 'S', 'f']
3731, 22, 3, 19, 8601, 2753, 9015, 7233, 3903, 22, 9723, 10, 5227, 14, 19, 6

['E', 'V']
5, 22

['t', 'H', 'O', 'l', '1719', '2361', 'Q', '5331', 'n', 'T', '5255', 'N', 'a', '5815', '8555', '6497', 'Z', '9229', '2403', '7515']

20, 8, 15, 12, 1719, 2361, 17, 5331, 14, 20, 5255, 14, 1, 5815, 8555, 6497, 26, 9229, 2403, 7515