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: ['5387', '5975', '4799', '2619', 'a', 'A', 'i', 'G', '1019', 'v', 'g', '827', '677', 'G', '561', 'h', '9633', '545', 'z', '2015', 'v', 'J', '4591', '1985', '5595', '8651', 's', 'd', '8289']

5387, 5975, 4799, 2619, 1, 1, 9, 7, 1019, 22, 7, 827, 677, 7, 561, 8, 9633, 545, 26, 2015, 22, 10, 4591, 1985, 5595, 8651, 19, 4, 8289