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: ['4727', 'n', '983', '3675', 't', 'm', '2595', 'x', '9987', '2031', 'D', 'b', 'F', 'T', '3903', '6289', 'u', 'Y', 'l', '393', 'W', '8499', '1557', '7057', 'D', '5287', '2629']

SOLUTION: 4727, 14, 983, 3675, 20, 13, 2595, 24, 9987, 2031, 4, 2, 6, 20, 3903, 6289, 21, 25, 12, 393, 23, 8499, 1557, 7057, 4, 5287, 2629

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: ['3565', 'a', 'S', '1891', 'A', '1853', 'h', 'a', 'w', 'p', '855', '7999', 'a', 'w', '3371', '887', '9065', 'u']

SOLUTION:
3565, 1, 19, 1891, 1, 1853, 8, 1, 23, 16, 855, 7999, 1, 23, 3371, 887, 9065, 21