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: ['l', '269', 'l', '379', '359']

SOLUTION: 2, 3, 5, 6, 7, 9

PROBLEM: ['403', 'j', 'x', '187', '311', 'g', 'z', 'p', '287', 'w', 'k', 'm']

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

PROBLEM: ['453', 'q', 'x', 'd', 'a', 'j', 'd', 'n', 'i', '89']

SOLUTION:
3, 4, 5, 8, 9