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: ['143', 'i', '499', 't', '27']

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

PROBLEM: ['381', '277', 'g', '307', 'p', '105', '341', 'o', '313', '5', '375', '145', 'k']

SOLUTION: 0, 1, 2, 3, 4, 5, 7, 8

PROBLEM: ['69', 'l', 'f', 's', '265', 'w', '31', '31', 'h', 'g', 'b', 'v']

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