You found a safe. There's a numeric keypad on it...
The keypad is dirty, thanks to this you can easily spot that numbers
1, 5, and 8 are frequently used. It's so clear that you guess no
other digit is in use in this code.
Write a script printing all combinations of 4 digits that use all of
those used digits.
Output one combination per line, separate digits using spaces, so your output should look like:
1 1 5 8
1 5 5 8
1 5 8 8
...
There's no corrections yet, hit the `Submit` button to send your code to the correction bot.
Keyboard shortcuts: