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: ['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: ['M', 'c', 'm', 'z', 'J', 'l', '8037', 'b', 'K', 'k', 'H', '2671', '6105', '7937', '5383', 'h', 'E', 'j', 'Z', '8023', '3459', 'S', '4023', 'W', 'N', '8451', 'g', '5301', 'n', 'E', '1111', 'p', '4645', 'k', 'H']

SOLUTION: 13, 3, 13, 26, 10, 12, 8037, 2, 11, 11, 8, 2671, 6105, 7937, 5383, 8, 5, 10, 26, 8023, 3459, 19, 4023, 23, 14, 8451, 7, 5301, 14, 5, 1111, 16, 4645, 11, 8

PROBLEM: ['2883', 'o', '7511', '2913', '4201', 'T', '9227', '3371', 'd', 'H', 'i', 'X', '5763', 'P', '7653', 'u', '4855', 'C', 'n', 'g', 'w', 's', '8369', '579', '2193', '1405', 'r', '2443', 'm', '5421']

SOLUTION:
2883, 15, 7511, 2913, 4201, 20, 9227, 3371, 4, 8, 9, 24, 5763, 16, 7653, 21, 4855, 3, 14, 7, 23, 19, 8369, 579, 2193, 1405, 18, 2443, 13, 5421