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: ['1761', '7545', 'l', 'D', '2393', 'Q', 'i', '1055', 'p', 'Z', '6591', '8203', '9345', '9163', 'u', 'C', 'N', 'v', '7419', '9591', '805']

1761, 7545, 12, 4, 2393, 17, 9, 1055, 16, 26, 6591, 8203, 9345, 9163, 21, 3, 14, 22, 7419, 9591, 805