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: ['2105', 'h', '2769', '8309', '9003', 't', 'U', '1993', '2859', '3295', 't', 'T', '8943', '7385', '1667', 'd', '7453', 'D', 'A', 'd', 'J', 'h', 'V', 'F', 'x', 'f', '4003', '8121']

SOLUTION: 2105, 8, 2769, 8309, 9003, 20, 21, 1993, 2859, 3295, 20, 20, 8943, 7385, 1667, 4, 7453, 4, 1, 4, 10, 8, 22, 6, 24, 6, 4003, 8121

PROBLEM: ['P', '127', '5527', 'G', 'R', '7087', 'E', 'T', 'n', '3681', 'Z', 'Q', '6843', '9395', 'P', '7551', '4677', 'o', 'g', '8023', '3419', 'B', 'i', '9561', '6635', '8805', '223', '7579', 'T', 'S', '8807']

SOLUTION: 16, 127, 5527, 7, 18, 7087, 5, 20, 14, 3681, 26, 17, 6843, 9395, 16, 7551, 4677, 15, 7, 8023, 3419, 2, 9, 9561, 6635, 8805, 223, 7579, 20, 19, 8807

PROBLEM: ['4345', '1815', '7973', '6187', 'U', '1133', '8791', '3555', 'i', 's', 'L', 'm', '7695', 'A']

SOLUTION:
4345, 1815, 7973, 6187, 21, 1133, 8791, 3555, 9, 19, 12, 13, 7695, 1