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: ['n', '1107', 'o', 'X', 'M', '5451', 'I', 's', 'v', 'r', 't', '663', '6077', '209', '3509', 'x', '8181', 'u', '1749', 'q', 'N', 'i', 'n', 'u', 'j', 'I', 'o', '7593', 'w', '5945', 'e']

14, 1107, 15, 24, 13, 5451, 9, 19, 22, 18, 20, 663, 6077, 209, 3509, 24, 8181, 21, 1749, 17, 14, 9, 14, 21, 10, 9, 15, 7593, 23, 5945, 5