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: ['2471', 'd', 'S', '1417', 'Q', 'm', '7803', '7559', 'M', '99', '6603', 't', '4777', 'K', 'c', 'K', '793', 'H', '1229', '1509', '677', '5239', 'A', '7965', '2709', '2235', 'h', 'U', 'Z', 'V', '9871', '7903', '681', 'p', '4981', '1763', 'h']

SOLUTION: 2471, 4, 19, 1417, 17, 13, 7803, 7559, 13, 99, 6603, 20, 4777, 11, 3, 11, 793, 8, 1229, 1509, 677, 5239, 1, 7965, 2709, 2235, 8, 21, 26, 22, 9871, 7903, 681, 16, 4981, 1763, 8

PROBLEM: ['4697', '3121', '3407', 'B', '7405', '6855', '7757', 'U', '5299', '3001', '2769', '6907', 'y', '3455', 'F', 'O', 'p', '4431', 'Q', 'C', '2905']

SOLUTION: 4697, 3121, 3407, 2, 7405, 6855, 7757, 21, 5299, 3001, 2769, 6907, 25, 3455, 6, 15, 16, 4431, 17, 3, 2905

PROBLEM: ['G', '6823', 'q', '2751', 'e', '8609', '7343', '6051', 'O', 'm', 'F', 'z', 'n', 'Q', 'F', 'i', 'p', 'o', 'F', '6139', 'h', '721', 'w', 'F', '2371', '8505', 'F', '6135', 'm', 'e', 'J']

SOLUTION:
7, 6823, 17, 2751, 5, 8609, 7343, 6051, 15, 13, 6, 26, 14, 17, 6, 9, 16, 15, 6, 6139, 8, 721, 23, 6, 2371, 8505, 6, 6135, 13, 5, 10