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: ['7031', '6729', 'n', 'P', 'A', 'B', '8347', '9943', 'S', 'C', '7017', '1889', '4201', '5683', 'E', 'l', 'H', '159', '1463', 'v', '5043', 'd', 'u', 'k', 'L', '4667', '3811', 'r', '449', 'e', '9713', '5375', '319', '595', 'g', '5133']

7031, 6729, 14, 16, 1, 2, 8347, 9943, 19, 3, 7017, 1889, 4201, 5683, 5, 12, 8, 159, 1463, 22, 5043, 4, 21, 11, 12, 4667, 3811, 18, 449, 5, 9713, 5375, 319, 595, 7, 5133