In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.

['c', '471', 'l', 'z', '23', 'c', '43', 'o', '175', 'w', 'c', 'p', '431']
1, 2, 3, 4, 5, 7

['213', '321', 'z']
1, 2, 3

['e', 'p', '439', 'p', 'g', 't']

3, 4, 9