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: ['J', 'S', '1347', '3823', 'a', '6463', 'I', 'F', 'Q', '2427', '1829', '6693', 'a', '293', 'i', '4821', 'H', '5139', 's', '8321', 's', '4183', '3745', 'O', 'R', 'B', '2035', 'x', '8955', '6169', '9309', '6167', 'N', 'M']

10, 19, 1347, 3823, 1, 6463, 9, 6, 17, 2427, 1829, 6693, 1, 293, 9, 4821, 8, 5139, 19, 8321, 19, 4183, 3745, 15, 18, 2, 2035, 24, 8955, 6169, 9309, 6167, 14, 13