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: ['j', 'c', 'h', 'A', 'E', '6657', 'M', 'S', 'l', '6651', '3981', 'D', '4809', 'C', '7955', 'I', 'j', 'o', 'h', 'y', 'r', 'H']

10, 3, 8, 1, 5, 6657, 13, 19, 12, 6651, 3981, 4, 4809, 3, 7955, 9, 10, 15, 8, 25, 18, 8