TASK DEFINITION: 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.
PROBLEM: ['61', '417', '437', '489', '383', 'n', '11', 'o', 'a', 'v', '37', 'q', '317']

SOLUTION: 1, 3, 4, 6, 7, 8, 9

PROBLEM: ['t', '175', '163', 'k', '279', '385', 'y', '71', 'g']

SOLUTION: 1, 2, 3, 5, 6, 7, 8, 9

PROBLEM: ['q', '451', '391', 'z', 'o', '135', '465', 'q']

SOLUTION:
1, 3, 4, 5, 6, 9