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: ['7921', 'g', 'Y', 'p', '7177', '2497', '4181', 'j', '4039', 'm', 'd', 'I', '3011', '8631', 'g', 'o', '2219', '9165', 'x', 'I', 'h', '681', '7167', '65', '7715', '6359', '9295', '5939', '4297', '5837', 'D', '9071']

7921, 7, 25, 16, 7177, 2497, 4181, 10, 4039, 13, 4, 9, 3011, 8631, 7, 15, 2219, 9165, 24, 9, 8, 681, 7167, 65, 7715, 6359, 9295, 5939, 4297, 5837, 4, 9071