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: ['8941', 'S', '7811', '3683', 'c', '4133', '7281', 'q', 't', 'L', 'H', '8555', 'h', '7851', 'x', '4329', 'Z', 'S', '2173', 'f', '6157', 'q']

8941, 19, 7811, 3683, 3, 4133, 7281, 17, 20, 12, 8, 8555, 8, 7851, 24, 4329, 26, 19, 2173, 6, 6157, 17