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.

['d', '903', 'N', 'n', '1959', 'U', 'Z', 'v', 'f', '6207', '4947', '9471', 'v', '481', 'Z', '163']
4, 903, 14, 14, 1959, 21, 26, 22, 6, 6207, 4947, 9471, 22, 481, 26, 163

['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

['D', '5531', '769', '8683', '257', '5991', 'S', 'P', '6511', '5921', 'h', '7583', 'x', '6961', '8049', '8497', 'B', 'D']

4, 5531, 769, 8683, 257, 5991, 19, 16, 6511, 5921, 8, 7583, 24, 6961, 8049, 8497, 2, 4