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: ['2765', '4011', '9919', 'I', 'G', '5711', '9155', '4739', '2739', 'w', '8669', 'S', 'Y', '6639', 'm', 'c', 'p', 'T', 'A', '785', 'C', '2245', '5183']

2765, 4011, 9919, 9, 7, 5711, 9155, 4739, 2739, 23, 8669, 19, 25, 6639, 13, 3, 16, 20, 1, 785, 3, 2245, 5183