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.
--------
Question: ['93', 'h', 'd', 'z', '395', 'r', 'j', 'f', '323', '215', 'n', 's', '497']

Answer: 1, 2, 3, 4, 5, 7, 9


Question: ['u', '157', '63', '411', 'x', 'c', 'k', 'z', 'i', '279', '311', '431']

Answer: 1, 2, 3, 4, 5, 6, 7, 9


Question: ['141', 'y', '187', 'c', 'j']

Answer:
1, 4, 7, 8