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.

[EX Q]: ['t', '197', '129', 'u', 'l', 'y', '485', '57', '147', 'p', '137', 'v', '221']
[EX A]: 1, 2, 3, 4, 5, 7, 8, 9

[EX Q]: ['s', '443', '239', 't', '99']
[EX A]: 2, 3, 4, 9

[EX Q]: ['g', '473', '447', '237', '9', '329', '139', '229', '67', 'z', '241', '469', 'i', 'c']
[EX A]:
1, 2, 3, 4, 6, 7, 9