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]: ['o', '61', '475', '457', 'a', 'o', 'z', '227', '415', 'z', 'x', 'y', '73', '205', 'y']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7

[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]: ['23', '451', '329', 'z', 'h', 'd', '71', 'e', 'i', 'p', '263', 'o', 'w', 'd', '409']
[EX A]:
0, 1, 2, 3, 4, 5, 6, 7, 9