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]: ['7', 'n', '443', '131', '189', '187', '261', '451', '449', 'o', 'i', 't', '15']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 8, 9

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

[EX Q]: ['k', '445', 'b', '469', '227', 'h', 'x']
[EX A]:
2, 4, 5, 6, 7, 9