```What comes out?

1. for (int x= 3; x>=1; x--)
{for (int y=1; y <= 3; y++)
System.out.print(y);
}

2. for (int x=1; x <= 3; x++)
{ for (int y=x; y <= 4; y++)
System.out.print(y);
}

3. for (int x=1; x <= 3; x += 2)
{for (int y=1;y <=4; y++)
System.out.print(x);
}

4. for (int x=1; x<= 5; x++)
{for (int y=1; y<=4;y++)
if (x % y==0)
System.out.print(y);
}

5. for (int x=5; x> = 1; x-=2)
{for (int y=1; y <= x; y++)
System.out.print(y);
}

6. for (int a=1; a <= 2; a++)
{for (int b=5; b >= 2; b--)
System.out.print(b);
}

7. for (int x=1 x <= 2; x++)
{for (int y=1; y <= 7; y += 2)
System.out.print(y);
}

8. for (int x=1; x <= 5; x++)
{for (int y=1; y <= x; y +=2)
System.out.print(y);
}

9. sum = 0;
for (int x=1; x<=7 ; x++)
{for (int y=1; y <= 3; y++)
{sum += y;
}
}
System.out.print(sum);

10. for (int x=1; x <= 5; x++)
{sum = 0;
for (int y=1; y <= 3; y++)
{  sum += y;
}
System.out.print(sum);
}

11.int sum = 0;
for (int x= 1; x <= 25; x++)
{for (int y=1; y <= 3; y++)
sum += y;
}
System.out.print(sum);

12. for (int x=1; x <= 5; x++)
{for (int y =2; y <= 7; y++)
if (x==y)
System.out.print(x);
}

13. int sum = 0;
for (int x=1 ;x <= 4; x++)
{ for (int y=1; y <= 3; y++)
sum += y;
}
System.out.print(sum);

14. for (int x=1; x <= 3; x++)
{sum = 0;
for (int y=1; y <= 7; y+=2)
sum += y;
System.out.print(sum);
}

15. for (int x=1; x <= 6; x++)
{for (int y=1; y <= x; y++)
if (x % y==0)
System.out.print(y);
}

16. for (int x=1; x <= 3; x++)
{for (int y=1; y <= 3; y++)
System.out.print(x * y);
}

17. for (int x=1; x <= 7; x += 2)
{for (int y = 5; y >= 3; y--)
if (y > x)
System.out.print(y);
}

18. sum = 0;
for (int x=1; x <= 27; x++)
{  for (int y=1; y <= 6; y++)
if (y % 2==0)
sum += y;
}
System.out.print( sum);

19. int sum = 0;
for (int x=1; x <= 678; x++)
{  for (int y=1; y <= 3; y++)
sum += y;
}
System.out.print(sum);

20.  for (int x=1; x <= 8; x++)
{for (int y= 2; y <= 7; y++)
if (x % 2==0 && y % 3==0)
System.out.println(x +" "+ y);
}
```