Can a point have two parent nodes?

[wahahaaaa123]

Thank you for your work, it is excellent.

I have a problem. I searched google for a long time, but it has not been solved.

Is there a way that a Node can have two parents at the same time and display them at the same time?
Just like Node 6 in the screenshot.

Node6 has two parent nodes N3 and N5 at the same time, but N3 and N5 have no relationship

code:

        elements: [{ group:'nodes', data:{ id: 'n0'}},
                { group:'nodes', data:{ id: 'n1',parent: 'n3'}},
                { group:'nodes', data:{ id: 'n2',parent: 'n3'}},
                { group:'nodes', data:{ id: 'n3'}},
                { group:'nodes', data:{ id: 'n4', parent: 'n5'}},
                { group:'nodes', data:{ id: 'n5'}},
                { group:'nodes', data:{ id: 'n6',parent: 'n5'}},
                { group:'edges', data:{ id: 'e0', source: 'n0', target: 'n1'} },
                { group:'edges', data:{ id: 'e1', source: 'n1', target: 'n2'} },
                { group:'edges', data:{ id: 'e3', source: 'n0', target: 'n3'} },
                { group:'edges', data:{ id: 'e5', source: 'n2', target: 'n4'} },
               ]