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.

['j', 'f', 'u', '5771', 'M', 'm', 'B', 'C', 'w', 'J', '8553', 'N', 'N', '9059', 'r', 'N', '9457']
10, 6, 21, 5771, 13, 13, 2, 3, 23, 10, 8553, 14, 14, 9059, 18, 14, 9457

['Z', '3475', 'E', 'j', '3677', '1917', 'I', '8059', '4703', '3797', 'J', 'N', '8541', '4289', 'g', 'L', '4629', '6549', '5659']
26, 3475, 5, 10, 3677, 1917, 9, 8059, 4703, 3797, 10, 14, 8541, 4289, 7, 12, 4629, 6549, 5659

['R', 'k', 'V', 'r', '8163', '2803', 'b', 'w', 'm', 'R']

18, 11, 22, 18, 8163, 2803, 2, 23, 13, 18