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.

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

[EX Q]: ['233', '35', 'l', 'j', '89', 'r', 't']
[EX A]: 2, 3, 5, 8, 9

[EX Q]: ['49', 'r', '179', 'h', 'q', 'h', 'w', '187', '427', 'x', 'r']
[EX A]:
1, 2, 4, 7, 8, 9