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: ['2679', '4019', 'Z', '4269', 'Y', '5671', '4977', 'b', 'r', 'F', 'n', '3329', 'B', '3271', 'h', 'w', '2455', '2667', '1725', '3319', 'Y', '3621', '7933', '9049', 'U', 'd', 'm', 'h', 'O', '6269']

2679, 4019, 26, 4269, 25, 5671, 4977, 2, 18, 6, 14, 3329, 2, 3271, 8, 23, 2455, 2667, 1725, 3319, 25, 3621, 7933, 9049, 21, 4, 13, 8, 15, 6269