This *is* so **hard**.

This _is_ so __hard__ too.

*At* start
*At* start

At *end*
At *end*

_At_ start
_At_ start

At _end_
At _end_

And *nest**ed***.

And *nest**ed*.

And *nest**ed* like** this.

And *not_nest_ed*.

And ***nested***.

And ___nested___.

And **nest*e***.

And lonely * here*.

And lonely ** here**.

And **lonely ** here**.

** and here**.

And **compli*cated \*** here

Some***what* more * ***he*re

Do it *\*this\** way
Or this \**this*\* way
Or that *\*that*\* way
Or that \**that\** way

[http://blah.com/blah_%28](http://blah.com/blah_%28)
[http://blah.com/blah__%28](http://blah.com/blah__%28)
[http://blah.com/blah___%28](http://blah.com/blah___%28)
[http://blah.com/blah____%28](http://blah.com/blah____%28)
[http://blah.com/blah_____%28](http://blah.com/blah_____%28)
[http://blah.com/blah______%28](http://blah.com/blah______%28)

[A-_B](A_-B)

- _test_
- '_test_'
- "_test_"
- ("_test_")
- (_test_)
- “_test_”
- \`_test_'
- „_test_“

it--by design--_cannot have side-effects_.

it---by design---_cannot have side-effects_.