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', '5021', '7395', '4101', 'r', '703', '871', 'S', 'g', 'R', '3871', 'c', '6607', 'i', '7281', 'S', '8021', 'n', '9299', '4509', 'b', 'v', 'G', '9239', 'p']

SOLUTION: 8, 5021, 7395, 4101, 18, 703, 871, 19, 7, 18, 3871, 3, 6607, 9, 7281, 19, 8021, 14, 9299, 4509, 2, 22, 7, 9239, 16

PROBLEM: ['5545', '7973', 'M', 'y', '8231', 'D', '7831', '91', '5517', 'd', 'E', 'Y', 'S', 'c', '8775', '4131', '1279', 'b', 'M']

SOLUTION: 5545, 7973, 13, 25, 8231, 4, 7831, 91, 5517, 4, 5, 25, 19, 3, 8775, 4131, 1279, 2, 13

PROBLEM: ['7469', 'F', 'f', 'O', 'X', 'A', 'j', 'u', '4763', 'o', '4451', 'S', '9469', '1779', '8089', 'D', 'n', 'R', 'm', '8465', '5865', '6759', 'Y', 'w', 'H', '5547', 'V', 'j', '3747', '3865', '549', 'r', '4383', '9179', '6307', '9723', 'J', 'p']

SOLUTION:
7469, 6, 6, 15, 24, 1, 10, 21, 4763, 15, 4451, 19, 9469, 1779, 8089, 4, 14, 18, 13, 8465, 5865, 6759, 25, 23, 8, 5547, 22, 10, 3747, 3865, 549, 18, 4383, 9179, 6307, 9723, 10, 16