1 false
2 true
3 true
4 true
5 false
6 false
7 false
8 true
9 side effect
10 true
11 number
12 w 10
13 function
14 false
15 10
16 false
17 10
18 false
19 33
20 false
21 20
22 20
23 true
24 20
25 undefined