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: ['405', 'x', '163', 'z', 'z', '261', 'o']

Answer: 0, 1, 2, 3, 4, 5, 6


Question: ['353', 'y', 'a', 'g', '141', '97', '457', '297', '25', 'g', '131', 'u', '303', '39', 'p']

Answer: 0, 1, 2, 3, 4, 5, 7, 9


Question: ['49', '219', '83']

Answer:
1, 2, 3, 4, 8, 9