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: ['b', '329', 'm', 'q', 'k', 'z', 'k', '199', 'v', 'l']

SOLUTION: 1, 2, 3, 9

PROBLEM: ['183', '89', '35', 'e', 'e', '499', 'e', 'u', 'y', 'o', 'f', 'l']

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

PROBLEM: ['w', '319', 's', '487', '291', 'c', 'd', '375', 'x', '499']

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