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: ['h', 'T', '3899', '637', '9203', 'l', '1559', 'F', '5453', 'l', '1897', '5407', 'D', '905', 'z']

SOLUTION: 8, 20, 3899, 637, 9203, 12, 1559, 6, 5453, 12, 1897, 5407, 4, 905, 26

PROBLEM: ['7505', 'B', 'v', '5329', '33', '6439', 'H', '5843', 'A', 'j', 'Z', 'H', 'R', 'K', '3099', 'w', 'R', 't', '9351', 'V', '2753', '8169', '7899', 'k', '8541', 't', 'g', '713', '9591', '2901']

SOLUTION: 7505, 2, 22, 5329, 33, 6439, 8, 5843, 1, 10, 26, 8, 18, 11, 3099, 23, 18, 20, 9351, 22, 2753, 8169, 7899, 11, 8541, 20, 7, 713, 9591, 2901

PROBLEM: ['M', 't', '1853', '9701', 'h', '2631', '5817', 'w']

SOLUTION:
13, 20, 1853, 9701, 8, 2631, 5817, 23