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]: ['v', '477', 'j', '339', '245', 'r', '417', 'g', '475', 'n', 'q', '171']
[A]: 1, 2, 3, 4, 5, 7, 9


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


[Q]: ['c', 'h', '151', 'g', 'd', 'd', 'k', '37']
[A]:
1, 3, 5, 7