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: ['M', '8445', '1501', 'l', 'O', '759', '5093', 'u', 'U', 'y', '3239', '2977', '6135', 'p', 'U', 'C', '85', 'c', '907', '8385', '6717', 's', '7719', 'A', 'p', '4947', 'V', 'c', 'x', '9579', 'k', '5311', 'X', 'b', '5205', 'j', 'I', '1949', 'P']

13, 8445, 1501, 12, 15, 759, 5093, 21, 21, 25, 3239, 2977, 6135, 16, 21, 3, 85, 3, 907, 8385, 6717, 19, 7719, 1, 16, 4947, 22, 3, 24, 9579, 11, 5311, 24, 2, 5205, 10, 9, 1949, 16