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.

[Q]: ['101', '473', '25', 'i', '117']
[A]: 0, 1, 2, 3, 4, 5, 7


[Q]: ['285', 'h', '231', 'l', 'd', 'k', '309', '345', 'k', 'p', '351', '93', 'b', 'w']
[A]: 0, 1, 2, 3, 4, 5, 8, 9


[Q]: ['185', 'm', 'f', '471', '485', 'f', 'x', 'n']
[A]:
1, 4, 5, 7, 8