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: ['7667', '1895', '347', '7211', 'N', '3427', '9199', '4501', 'l', '185', '2971', 'f', 'N', 'K', 'j', '3883', 'Q', 'N', '5795', 'f', 't', 'H', '4703', 'y', 'O', '2631', '651']

7667, 1895, 347, 7211, 14, 3427, 9199, 4501, 12, 185, 2971, 6, 14, 11, 10, 3883, 17, 14, 5795, 6, 20, 8, 4703, 25, 15, 2631, 651