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: ['Z', '2581', '5693', '7535', 'V', '7375', 'I', '8943', '5663', '5595', 'G', 'f', 'I', 'f', '989', 'E', '6933', '7453', 'J', 'F', '5137', 'I', 'R', '6245', '569', 'Y', '7963', 'C', 'p', '1191', 'q', 'V', 'Q', '8299', 't']

26, 2581, 5693, 7535, 22, 7375, 9, 8943, 5663, 5595, 7, 6, 9, 6, 989, 5, 6933, 7453, 10, 6, 5137, 9, 18, 6245, 569, 25, 7963, 3, 16, 1191, 17, 22, 17, 8299, 20