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: ['8061', 'd', '7763', 'p', '1505', '1461', 'U', 'l', '9741', 'S', 'I', '73', '4571', 'y', 'E', '7937', '1297', 'M', 'U', 'B', 'O', 'm', 's', '1591', 'q', '5295', 'm', '7053', '5981', 'i', 'n', 'H', 'K']

8061, 4, 7763, 16, 1505, 1461, 21, 12, 9741, 19, 9, 73, 4571, 25, 5, 7937, 1297, 13, 21, 2, 15, 13, 19, 1591, 17, 5295, 13, 7053, 5981, 9, 14, 8, 11