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.

['425', 'x', 'u', 'f', 'v', '481', 'm', 'y', '159', '1']
1, 2, 4, 5, 8, 9

['r', '273', 'h', '421', 'k', 'r', 'k', 't', 'x', 's', 'j']
1, 2, 3, 4, 7

['125', '191', '423', '13', '479', 'r', 'l', 'r', '121', '251', 'g', '67']

1, 2, 3, 4, 5, 6, 7, 9