Click on a parent to see the child elements. Click on a child element to see the grandchild elements.

Parent 1
Child 1
Grandchild 1
Grandchild 2
Grandchild 3
Child 2
Grandchild 1
Grandchild 2
Grandchild 3
Parent 2
Child 1
Grandchild 1
Grandchild 2
Grandchild 3
Child 2
Grandchild 1
Grandchild 2
Grandchild 3