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: ['3927', 'I', '3053', '299', '4283', '2471', 'V', 't', 'i', 'v', '4623', 'X', 'e', 'S', 'u', 'v', '2201']

SOLUTION: 3927, 9, 3053, 299, 4283, 2471, 22, 20, 9, 22, 4623, 24, 5, 19, 21, 22, 2201

PROBLEM: ['j', '5075', 'R', 'I', 'y', '7405', '5539', '6463', '8961', '1803', '8897', '1929', 'E', 'N', '9433', 'C']

SOLUTION: 10, 5075, 18, 9, 25, 7405, 5539, 6463, 8961, 1803, 8897, 1929, 5, 14, 9433, 3

PROBLEM: ['3957', 'D', 'S', 'r', '361', 'x', 'R', 'I', '8927', 'l', '8845', 'g', 'i', '6801', 'V', '3335', '615', '2939']

SOLUTION:
3957, 4, 19, 18, 361, 24, 18, 9, 8927, 12, 8845, 7, 9, 6801, 22, 3335, 615, 2939