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: ['K', 'U', '8245', 'I', 'C', '5815', '5163', '3535', 'h', 'J', 'k', 'i', '5525', 'y', 's', 'u']

SOLUTION: 11, 21, 8245, 9, 3, 5815, 5163, 3535, 8, 10, 11, 9, 5525, 25, 19, 21

PROBLEM: ['w', '8855', 'L', '1153', '543', '7281', 'G', '9643', 'z', '4051', '2313', '7921', '8947', '1677', '7081', '8769', 'Z', '5045', '2391', 'M', '5341', '2881', '2117', 'f', '809', 'E', '595', 'D', 'l', '8877', 'd']

SOLUTION: 23, 8855, 12, 1153, 543, 7281, 7, 9643, 26, 4051, 2313, 7921, 8947, 1677, 7081, 8769, 26, 5045, 2391, 13, 5341, 2881, 2117, 6, 809, 5, 595, 4, 12, 8877, 4

PROBLEM: ['6109', 'R', 'x', 'u', '2349', 'a', '9521', '9321', '5557', 'D', 's', 'T', '27', '757', '4791', 'Q', '2861', '5863', '8187', 'J', 'e', '9323', 'E', '3207', 'm', '4577', 'B', 'O', 's', 'a', 'B']

SOLUTION:
6109, 18, 24, 21, 2349, 1, 9521, 9321, 5557, 4, 19, 20, 27, 757, 4791, 17, 2861, 5863, 8187, 10, 5, 9323, 5, 3207, 13, 4577, 2, 15, 19, 1, 2