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]: ['r', '171', 'p', '299', 'u', 'n', '421', '331', 'h', '21', 'h', 'x', '435', '327', '373']
[A]: 1, 2, 3, 4, 5, 7, 9


[Q]: ['k', '409', '333', '283', 'm', '489', '377', '439', '443', 'r', '101', 'n', '35']
[A]: 0, 1, 2, 3, 4, 5, 7, 8, 9


[Q]: ['259', '225', 'q', 'p', '309', '405', '313', '441', '77', '297', 'e', '339', '85', 'i']
[A]:
0, 1, 2, 3, 4, 5, 7, 8, 9