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: ['w', '2609', 'T', 'Q', '687', 'v', '3455', 'S', 'c', 'F', '8851', 'o', '4259', '2371', 'K', '7437', '549', '895', '5437', '3763', '2637', '4251', '7359', 'R', 'K', '3605', 'b', '3197', '1971', 'r', '4365', 'w', 'm', '3229', '8849', '6487']

23, 2609, 20, 17, 687, 22, 3455, 19, 3, 6, 8851, 15, 4259, 2371, 11, 7437, 549, 895, 5437, 3763, 2637, 4251, 7359, 18, 11, 3605, 2, 3197, 1971, 18, 4365, 23, 13, 3229, 8849, 6487