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: ['c', 'm', 'h', 'c', '69', '233', 'j', 'g', 'r', 'x', '59', 'p', '469']

A: 2, 3, 4, 5, 6, 9
****
Q: ['q', '17', '497', '69', 'n', '25', 'a', 'j', 'c', 'j', '303', '453', 'k', 'h']

A: 0, 1, 2, 3, 4, 5, 6, 7, 9
****
Q: ['b', 'c', 'x', '145', '227', '375', 'd', '187', 'g', 'u', 'o']

A:
1, 2, 3, 4, 5, 7, 8
****