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', '3405', '3457', '4825', '6791', '459', '9637', 'W', '2491', '9943', 'r', '2917', '881', 'W', 'x', '3211', '377', 'A', 'h', 'c', 'e']

26, 3405, 3457, 4825, 6791, 459, 9637, 23, 2491, 9943, 18, 2917, 881, 23, 24, 3211, 377, 1, 8, 3, 5