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: ['B', 'c', 'c', '3601', '6707', '5317', '8063', 'L', '7717', '4283', '11', 'e', 'a', '9223', '237', '9679', 'f', 'z', '2697', '471', '6615', '3303', 'o', 'g', 'C', 'y', '5271', '7907', '7655', '4649', '893']

2, 3, 3, 3601, 6707, 5317, 8063, 12, 7717, 4283, 11, 5, 1, 9223, 237, 9679, 6, 26, 2697, 471, 6615, 3303, 15, 7, 3, 25, 5271, 7907, 7655, 4649, 893