1. ^try-catch{ ^use[$empty] }

2. $f[^file::create[test]]
   ^try-catch{ ^f.save[text;;] }

3. ^try-catch{ ^file:delete[$empty] }

4. ^try-catch{ ^file::load[text;;] }

5. ^try-catch{ ^json:string[^file::stat[$empty]] }

6. ^try-catch{ ^json:string[^file::exec[;]] }

7. ^try-catch{ ^file:lock[]{code} }

8. ^try-catch{ ^file:base64[;] }

9. ^try-catch{ ^file:crc32[$empty] }

10. ^try-catch{ ^file:md5[$empty] }

11. ^try-catch{ $gm[^hashfile::open[$empty]] $gm.key[value] }

12. ^try-catch{ $i[^image::load[$empty]] }

13. ^try-catch{ $i[^image::font[abc;]] }

14. ^try-catch{ $s[ ] ^s.save[$empty] }

14. ^try-catch{ ^table::load[nameless;] }

15. ^try-catch{ ^table::load[;] }