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: ['D', 'v', '1223', '9625', 'q', 'j', 'Y', '8483', 's', 'F', '4583', '8721', '5919', 'q', 's', '3787', '7941', 'p', 'u', 'R', 'c', 'o', 'I']

4, 22, 1223, 9625, 17, 10, 25, 8483, 19, 6, 4583, 8721, 5919, 17, 19, 3787, 7941, 16, 21, 18, 3, 15, 9