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: ['4799', 'P', 'j', 'U', 'h', 'O', 'r', '5185', '543', 'x', '7969', '8319', '5981', '6025', 'L', 'r', 'd', 'R', '6599', 'p', 'i', 'A', '9653', '5373', 'f', 'n', 'g', '3181', '2205', '1187', 'V', '5873', 'F', '5481', 'n', '4317']

4799, 16, 10, 21, 8, 15, 18, 5185, 543, 24, 7969, 8319, 5981, 6025, 12, 18, 4, 18, 6599, 16, 9, 1, 9653, 5373, 6, 14, 7, 3181, 2205, 1187, 22, 5873, 6, 5481, 14, 4317