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: ['g', 'f', 'I', 'Q', 'm', '7709', '2305', '7971', 'S', '659', 'u', '9639', '4639', '1945', 'T', '3245', '147', '2801', 'd', 'j', 'R', '1123', 'G', '4571', '3369', 'z', '4341', '5361']

7, 6, 9, 17, 13, 7709, 2305, 7971, 19, 659, 21, 9639, 4639, 1945, 20, 3245, 147, 2801, 4, 10, 18, 1123, 7, 4571, 3369, 26, 4341, 5361