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.

['P', '4337', 'q', '9481', '7859', 'E', '1813', '2611', '1647', 'X', '4807', '253', '3465', 'o', 'p', 'z', 'K', 'z', 'P', 'l', 'Z', '5635', '7601', 'u', 'e', '2255', 'v', '6357', 'S']
16, 4337, 17, 9481, 7859, 5, 1813, 2611, 1647, 24, 4807, 253, 3465, 15, 16, 26, 11, 26, 16, 12, 26, 5635, 7601, 21, 5, 2255, 22, 6357, 19

['2973', 'a', '6251', 's', '5009', 'm', 'G']
2973, 1, 6251, 19, 5009, 13, 7

['8453', '7883', '1205', '949', 'P', '9565', 'u', 'V', '1847', 'F', '3415', '6495', '7803', '9127', '2491', 'l', 'i', 'e', '7785', '4109', 'X', '4119', '8511', '7557', 'z', '8275', 'B', 'd', 'E', 'A', '4451', '6857', '6765', 'l', '2529', 'g', '4297', '6983', 'J', '913']

8453, 7883, 1205, 949, 16, 9565, 21, 22, 1847, 6, 3415, 6495, 7803, 9127, 2491, 12, 9, 5, 7785, 4109, 24, 4119, 8511, 7557, 26, 8275, 2, 4, 5, 1, 4451, 6857, 6765, 12, 2529, 7, 4297, 6983, 10, 913