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]: ['x', '493', 'x', '211', 'n', '143', '277', '191']
[EX A]: 1, 2, 3, 4, 7, 9

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

[EX Q]: ['467', 'g', '203', 'x', '309', 'j', '223', '27', 'q', 'y', 'n', 'l']
[EX A]:
0, 2, 3, 4, 6, 7, 9