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: ['2059', 'f', 'R', 'W', 'B', '2993', 'U', '9785', 'u', '347', 'a', '9965', 'w', 'Q', 'A', 'L', 'j', '4803', '657', 'C', 'n', 'c', '567', '7843', 'm', 'd', '4043', '3161', 'U', 'Q', 'k', '7999', '1351', '3063', 'W', '437', 'G', 'W', 'p']

2059, 6, 18, 23, 2, 2993, 21, 9785, 21, 347, 1, 9965, 23, 17, 1, 12, 10, 4803, 657, 3, 14, 3, 567, 7843, 13, 4, 4043, 3161, 21, 17, 11, 7999, 1351, 3063, 23, 437, 7, 23, 16