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: ['s', '5369', 'A', 'T', 'g', '8695', 'g', 'h', '6967', 'y', 'T', 'r', '3171', '3719', 'X', 'x', 'p', '8757', '6771', '7173', '6889', '6157', 'B', 'x', '9855', '8187', 'Q', 'p', '3369', 'r', 'g', 'X', '9335']

19, 5369, 1, 20, 7, 8695, 7, 8, 6967, 25, 20, 18, 3171, 3719, 24, 24, 16, 8757, 6771, 7173, 6889, 6157, 2, 24, 9855, 8187, 17, 16, 3369, 18, 7, 24, 9335