How about the safe inside of the cabinet?
Turn right 30; rotate the number plate to the right to 30, then continue to rotate to 30. Pause, wait for the next group. Turn left 20; rotate the number plate to the left to 20, then continue to rotate to 20. Pause, wait for the next group.
Suppose three sets of passwords are: turn right 30; turn left 20; turn right 10
Turn right 10; rotate the number plate to the right to 10. At this point, three sets of password pairs.
note! The first two groups of passwords must be accurate, if you turn a vertex, but also from scratch, the last group turned a little, you can return
