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: ['c', 'M', '7011', 'O', 'T', 'e', '1525', '2353', '5349', 'e', '9645', '1753', '6973', '7463', 'F', '9273', 'f', 'I', '293', 'v', 'n', 'w', '2041', 'Y', 'r', '9603', '7817', 'U', 'E']

3, 13, 7011, 15, 20, 5, 1525, 2353, 5349, 5, 9645, 1753, 6973, 7463, 6, 9273, 6, 9, 293, 22, 14, 23, 2041, 25, 18, 9603, 7817, 21, 5