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: ['p', '45', 'z', '85', 'k', 'e', '191', '265', '261', 'w', 'l', '263', 'w']

SOLUTION: 1, 2, 3, 4, 5, 6, 8, 9

PROBLEM: ['43', 'f', '449', 't', 'z', 'q', '259', 's', 'n', 'h', '123', 'z']

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

PROBLEM: ['k', '415', '221', '315', 'f', '331', 'f', 'p', 'k', 'z']

SOLUTION:
1, 2, 3, 4, 5