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.
Input: ['r', 'Q', '4279', '2037', '5215', 'h', '5505', 'j', 'v', '9199', 'v', 'a', 'W', 'h', 'G', '9375', 'I', 'D', '7445', 'n', 'J', 'U', '7549', 'w', 'G', '6177', 'H', 'L']

18, 17, 4279, 2037, 5215, 8, 5505, 10, 22, 9199, 22, 1, 23, 8, 7, 9375, 9, 4, 7445, 14, 10, 21, 7549, 23, 7, 6177, 8, 12