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.

['u', '73', 'x', 'f', 'e', '187', 'x', 'i', '215', '1', 'z', '129', '89', 'f', 'i']
1, 2, 3, 5, 7, 8, 9

['w', 'p', 'r', 'v', 'd']
-1

['471', 'k', '303', '117', 'v', 'e', '89', '161', 'w', '469', '339', 'n', 'r', 'u']

0, 1, 3, 4, 6, 7, 8, 9