Anti-Correlated

 Below, the view of how parsing needs to work in Qiskit. Time flows from left to right

on  a circuit diagram, but consideration from bottom to top.

                                                                

Sideways view:

The slot is empty, so the identity matrix is entered. Because we are working from

bottom to top, the tensor product is calculated with the identity matrix first.

The CNOT column:

From the bottom, the CNOT arrangement comes first:

Applied to Ket 1:

                                                                                 

This yields Bell state 4:

*     *     *

A useful overview of Bell States. Watch the vid!!

https://www.quera.com/glossary/bell-state

I checked for the anti-correlated qubits...

                                                                                

*     *     *

One builds circuits the logical way for onself. It is in execution that things get

'mirrored' for the situation. 👧