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: ['t', 's', 'h', '6319', '9133', '1763', 'n', '5199', '669', '7721', 'x', 'i', '1831', 'X', '2499', '2789', 's', 'G', 'T', '9653', 'r', '4103', '4779', 'm', '6363', 'T', 'B', '6501', 'y', 'v', 'd', '791', '4533', 'r', 'n']

20, 19, 8, 6319, 9133, 1763, 14, 5199, 669, 7721, 24, 9, 1831, 24, 2499, 2789, 19, 7, 20, 9653, 18, 4103, 4779, 13, 6363, 20, 2, 6501, 25, 22, 4, 791, 4533, 18, 14