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: ['8111', '653', '3917', 'm', 'b', 'C', 'f', '3849', 'j', 'E', 'O', 'r', '1483', 'v', 'P', '7315', '429', 'm', 's', '3425', '7293', '1659', '4255', '2941', 'n', 'l', '719', 'T', '5063', '785', 't', 'R', '1479', '1135', 'g']

8111, 653, 3917, 13, 2, 3, 6, 3849, 10, 5, 15, 18, 1483, 22, 16, 7315, 429, 13, 19, 3425, 7293, 1659, 4255, 2941, 14, 12, 719, 20, 5063, 785, 20, 18, 1479, 1135, 7