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: ['1051', 'w', '1375', '3821', 'n', 'd', '9069', 'u', 'A', 'C', 'c', 'T', '3663', '3711', '6511', 'i', '245', 'T', '1047', '4195', '3705']

SOLUTION: 1051, 23, 1375, 3821, 14, 4, 9069, 21, 1, 3, 3, 20, 3663, 3711, 6511, 9, 245, 20, 1047, 4195, 3705

PROBLEM: ['9391', '5923', '7195', 'd', '5763', '4437', 'f', '2885', '153', 'I', 'w', 'v', 's', '3381', '2931', 'l', 'P', '2435', '7365', 'I', 'G', '4217', '8047', '6035', '865', 'h', '6273', 'y', 'b', 'X', 'e', '321', 'H']

SOLUTION: 9391, 5923, 7195, 4, 5763, 4437, 6, 2885, 153, 9, 23, 22, 19, 3381, 2931, 12, 16, 2435, 7365, 9, 7, 4217, 8047, 6035, 865, 8, 6273, 25, 2, 24, 5, 321, 8

PROBLEM: ['2811', '1807', 'd']

SOLUTION:
2811, 1807, 4