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: ['269', 'f', '321', '175', '15', 'n', 'b', 'z', '53', 'p', 'x', '457', 'q', 'b']

SOLUTION: 1, 2, 3, 4, 5, 6, 7, 9

PROBLEM: ['y', 'm', '121', 'h', 'm', '189', '117', '257', 'y', '181', '279', 'a', '453']

SOLUTION: 1, 2, 3, 4, 5, 7, 8, 9

PROBLEM: ['e', 'y', '119', 'h', 'q', '343', 'c', '81', '163']

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