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.

['b', 'a', 'v', 'W', 'R', '2221', 'N', '9463', 'Z', 'd', 'u', '9345']
2, 1, 22, 23, 18, 2221, 14, 9463, 26, 4, 21, 9345

['I', '1955', 'O', 'F', 's', '6579', 'x', '5185', '1041', 'Q', 'F', 'C', '9569', '8555', '3131', '8219', '3817', 'Z', '9207', 'y', '9481', '5347', '37', '4613', '9439', 'o', '8293', '5989', '7801']
9, 1955, 15, 6, 19, 6579, 24, 5185, 1041, 17, 6, 3, 9569, 8555, 3131, 8219, 3817, 26, 9207, 25, 9481, 5347, 37, 4613, 9439, 15, 8293, 5989, 7801

['P', 'F', '9221', '4813', 'q', 'Q', 'F']

16, 6, 9221, 4813, 17, 17, 6