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: ['o', '5361', 't', 'I', 'o', '3969', '3891', '2635', '6039', '2245', 'A', '1267', 'p', 'q', 'Z', '3341', '4643', '8909', 'S', 'Q', '1829', '119', 'l', 'S', 'u', 'R', 'g', '2239', 'G', 'o', '4271', 'c', 'P', 'e', '6533', 'A', 'J']

15, 5361, 20, 9, 15, 3969, 3891, 2635, 6039, 2245, 1, 1267, 16, 17, 26, 3341, 4643, 8909, 19, 17, 1829, 119, 12, 19, 21, 18, 7, 2239, 7, 15, 4271, 3, 16, 5, 6533, 1, 10