TASK 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.
PROBLEM: ['G', '2013', 'Y', 'w', '1159', 'K', 'a', 's', 'A', 'l', '6537', 'G', '9437', 'X', '6451', 'N', 'c', '9713', '7353', 'U', 'n', 'M', 'e', '3901', 'q', 'V', '6123', 'I', 'j', 'O', 'r', 'R', '5925', '9391']

SOLUTION: 7, 2013, 25, 23, 1159, 11, 1, 19, 1, 12, 6537, 7, 9437, 24, 6451, 14, 3, 9713, 7353, 21, 14, 13, 5, 3901, 17, 22, 6123, 9, 10, 15, 18, 18, 5925, 9391

PROBLEM: ['5209', 'd', 'C', 'x', '851', 'M', '8489', '9989', '6033', 'L', 'E', '9201', 'u', 'h', '1279', '9283', '9873', '259', '5015', '9735', 'R', 'J', '637', '4785', 'E', '4893', 'K', 'O']

SOLUTION: 5209, 4, 3, 24, 851, 13, 8489, 9989, 6033, 12, 5, 9201, 21, 8, 1279, 9283, 9873, 259, 5015, 9735, 18, 10, 637, 4785, 5, 4893, 11, 15

PROBLEM: ['899', '6077', '7779', '9959', 'B', 'C', 'c', '5977', '9611', 'p', '8013', 'r', '665', 'Z', 'i', '2099', 'w', '4795']

SOLUTION:
899, 6077, 7779, 9959, 2, 3, 3, 5977, 9611, 16, 8013, 18, 665, 26, 9, 2099, 23, 4795