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: ['d', '3165', 'H', '1775', 'G', 'd', 'i', '9787', '3837', 'P', '4895', '9709', '505', '6969', '9187', '3167', 'n', 't', 'C', 'h', '4913', 'u', '5485', 'T']

4, 3165, 8, 1775, 7, 4, 9, 9787, 3837, 16, 4895, 9709, 505, 6969, 9187, 3167, 14, 20, 3, 8, 4913, 21, 5485, 20