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: ['7319', 'r', '945', 'b', 'f', 'O', '65', '3623', '9273', '273', '3897', 'B', '7865', 'A', 'e', '5831', '7667', '75', '2969', 'E', 'X', '7655', '6253', 'y', 'E', 'F', '5899', 'g', 'k', '4651', 'W', '1205', '5635', 'f', 'm', 'c', '1475', 'm', 'j', '6749']

7319, 18, 945, 2, 6, 15, 65, 3623, 9273, 273, 3897, 2, 7865, 1, 5, 5831, 7667, 75, 2969, 5, 24, 7655, 6253, 25, 5, 6, 5899, 7, 11, 4651, 23, 1205, 5635, 6, 13, 3, 1475, 13, 10, 6749