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: ['C', 'N', '8185', '3721', 't', 'm', 'h', '1239', 'V', '1811', '591', 'm', '6931', 'A', '1207', '7407', '4709', '1345', 'l', '2635', '5023', '9389', 'w', 'G', 'm', '8321', '1453', 'O', 'M', '9805']

3, 14, 8185, 3721, 20, 13, 8, 1239, 22, 1811, 591, 13, 6931, 1, 1207, 7407, 4709, 1345, 12, 2635, 5023, 9389, 23, 7, 13, 8321, 1453, 15, 13, 9805