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.

['p', '231', 'd', 'i', '33', '431']
1, 2, 3, 4

['k', 'a', '437', '461', 'b', '341', '175']
1, 3, 4, 5, 6, 7

['f', '483', 'e', '1', 'x', '477', 'h', 'u']

1, 3, 4, 7, 8