No vertices:
( )

One vertex:
( )

Full graph of 5 vertices:
( 0 1 4 0 1 2 0 1 3 0 2 4 0 2 3 0 3 4 1 2 4 1 2 3 1 3 4 2 3 4 )

Graph with loops and multiple edges:
( 1 2 0 1 2 3 )