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: ['v', '467', 'm', '23', '479', '49', 'k', 'u', 'l', '119']

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

PROBLEM: ['y', 'v', '311', 'f', '273']

SOLUTION: 1, 2, 3, 7

PROBLEM: ['163', '291', 'm', 'z', '99', 'd', '365', 'm', '89', 's', 'e', 'q', 's', '161']

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