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: ['353', 'd', 'h', 'd']

SOLUTION: 3, 5

PROBLEM: ['121', 'm', 'n', '143', '281', 'c', 'j']

SOLUTION: 1, 2, 3, 4, 8

PROBLEM: ['f', 'a', '311', '91', 't', '99']

SOLUTION:
1, 3, 9