instruction:
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:
['f', '135', 's', '269', 'x', '45', 'p', '141', 'e']
answer:
1, 2, 3, 4, 5, 6, 9


question:
['t', '197', '129', 'u', 'l', 'y', '485', '57', '147', 'p', '137', 'v', '221']
answer:
1, 2, 3, 4, 5, 7, 8, 9


question:
['341', '179', 's', '323', 'h', 'x', 'k', 'o', '203', '141']
answer:

0, 1, 2, 3, 4, 7, 9