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: ['353', 'y', 'a', 'g', '141', '97', '457', '297', '25', 'g', '131', 'u', '303', '39', 'p']

A: 0, 1, 2, 3, 4, 5, 7, 9
****
Q: ['279', '115']

A: 1, 2, 5, 7, 9
****
Q: ['63', '177', '499', 'a', 'm', '473']

A:
1, 3, 4, 6, 7, 9
****