```
[(1, None), (1, 1), (1, None)]
[0, 1, 4, 9, ('done', 9)]
{4: ['pool', 'surf', 'tide'], 3: []}
[1, 2, 3, 4, 5] [1, 2, 3, 4] False
ye tg yke    4
[(3, 1)] [2] [2, 1]
[1, 2, 5, 20]
4 2 4 -4 2 0.5
{True: 'c'}
False True
```