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: ['J', '175', '7019', '9639', '3831', '949', 'T', 'M', '7185', 'e', 'i', '5215', 'F', 'H', '143', 'Z', 'x', '8943', '3073', 'd', 'd', '4711', 'Y', '3733', '4389', 'g', 's', '4799', 'p', 'a', 'S', 'Q', 'W', '7875', '1935', 'W']

10, 175, 7019, 9639, 3831, 949, 20, 13, 7185, 5, 9, 5215, 6, 8, 143, 26, 24, 8943, 3073, 4, 4, 4711, 25, 3733, 4389, 7, 19, 4799, 16, 1, 19, 17, 23, 7875, 1935, 23