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: ['1171', '7585', 'H', 'R', '367', '4509', '9555', '9691', '8173', '6007', '2391', '4867', 't', 'l', '5127', 'W', '3795', 'p', '8375']

SOLUTION: 1171, 7585, 8, 18, 367, 4509, 9555, 9691, 8173, 6007, 2391, 4867, 20, 12, 5127, 23, 3795, 16, 8375

PROBLEM: ['P', '4337', 'q', '9481', '7859', 'E', '1813', '2611', '1647', 'X', '4807', '253', '3465', 'o', 'p', 'z', 'K', 'z', 'P', 'l', 'Z', '5635', '7601', 'u', 'e', '2255', 'v', '6357', 'S']

SOLUTION: 16, 4337, 17, 9481, 7859, 5, 1813, 2611, 1647, 24, 4807, 253, 3465, 15, 16, 26, 11, 26, 16, 12, 26, 5635, 7601, 21, 5, 2255, 22, 6357, 19

PROBLEM: ['d', 'f', 'f', '8769', '3101', '7459', 'M', '1047', '7305', 'k', 'q', '7891', '531', '9537', 'Y', 'G', 'm', 'X', '2445', 'p', 'd', '4999', 'u', '3159', 'D', '3001', '2151']

SOLUTION:
4, 6, 6, 8769, 3101, 7459, 13, 1047, 7305, 11, 17, 7891, 531, 9537, 25, 7, 13, 24, 2445, 16, 4, 4999, 21, 3159, 4, 3001, 2151