`hi`lo`

      tab line plus **two** spaces
      4 spaces line plus two spaces

```javascript
     let a = 1;
function foo() {
    return bimbamsmash;
}
```

    chunk1

      chunk2
  
 
 
    chunk3

````
xxx
```
``````

   ```
   aaa
    bbb
  ccc
  ddd
   ```
```
```
    ```
    eee
    ```
```
fff
  ```
   ```
ggg
  ```
```
hhh
    ```
```
foo
```
bar
```
baz

```
``` iii
```