1. test test
  2. test test
  3. test test
  4. test test
  5. test test
  6. test test
  7. test test
  8. test test
  9. test test
  10. test test
  11. test test
  12. test test
  13. test test
  14. test test
  15. test test
  16. test test

Incorrect nesting:

  1. *test test* test
  2. _test test_ test
  3. **test test* test*
  4. __test␣test_␣test_
  5. test test test
  6. test test test
  7. test test test
  8. test test test

No emphasis:

  1. test* test *test
  2. test** test **test
  3. test_ test _test
  4. test__ test __test

Middle-word emphasis (asterisks):

  1. ab
  2. ab
  3. abc
  4. ab
  5. ab
  6. abc

Middle-word emphasis (underscore):

  1. _a_b
  2. a_b_
  3. a_b_c
  4. __a__b
  5. a__b__
  6. a__b__c
  7. my_precious_file.txt

Tricky Cases:

  1. E**. Test TestTestTest
  2. E**. Test Test Test Test

Overlong emphasis:

Name: ____________
Organization: ____
Region/Country: __

_____Cut here_____

____Cut here____