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: ['W', 'Y']

SOLUTION: 23, 25

PROBLEM: ['w', '5531', '9103', 'I', 'W', '8305', 'q', '2429', '1521', '545', '4637', 'a', 's', 'f', '3715', 'i', '729', 'V', '6671', 'B', '3877', '7891', 'Y', '1217', 'z']

SOLUTION: 23, 5531, 9103, 9, 23, 8305, 17, 2429, 1521, 545, 4637, 1, 19, 6, 3715, 9, 729, 22, 6671, 2, 3877, 7891, 25, 1217, 26

PROBLEM: ['4227', '9243', 'S', '1581', '5155', 'l', 'U', '5999', 'H', '7475', '9415', '4443', 'k', '219', 'M', 'f', '1163', 'U', '6595', '1471', 'G', 'v', '4867', '2729']

SOLUTION:
4227, 9243, 19, 1581, 5155, 12, 21, 5999, 8, 7475, 9415, 4443, 11, 219, 13, 6, 1163, 21, 6595, 1471, 7, 22, 4867, 2729