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: ['9779', 'Q', 'W', '6325', 'e', '1283', '8997', 'a', '493', '365', 'z', 'W', 'f', '1113', '2237', 'Z', '795', '6357', 'r', 'G', 'f', 'g']

SOLUTION: 9779, 17, 23, 6325, 5, 1283, 8997, 1, 493, 365, 26, 23, 6, 1113, 2237, 26, 795, 6357, 18, 7, 6, 7

PROBLEM: ['7215', 'G', '9919', '1137', 't', '3137', 'B', 'P', '5861', 'S', '9719', 'U', '2813', 'X', 'g', 'N', '5609', '1633', '6473', '4477', 'k', 't', 'P', 'g', 'y', 'B', '5871', '2891', '3767', '3875', '1969', '9275', 'M', '9663', '321', 'O']

SOLUTION:
7215, 7, 9919, 1137, 20, 3137, 2, 16, 5861, 19, 9719, 21, 2813, 24, 7, 14, 5609, 1633, 6473, 4477, 11, 20, 16, 7, 25, 2, 5871, 2891, 3767, 3875, 1969, 9275, 13, 9663, 321, 15