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broken image fixed (click 'rendered output' or 'side-by-side' to see the difference; image retrieved via Wayback Machine); for more info, see https://meta.mathoverflow.net/a/4058/70594

I think this is possible.

First note that it if the graph is disconnected it is trivial.

Consider two copies of this graph:

Vertices $4$ and $5$ are degree $3$ and all other are $4$.

Vertex $3$ is not adjacent to $4$ or $5$.

Connect $4$ to $4'$ and $5$ to $5'$ in the other copy to get $4$ regular graph with $3,3'$ having all their neighbourhood in the two copies.

The edges:

[(0, 3), (0, 4), (0, 5), (0, 6), (1, 3), (1, 4), (1, 5), (1, 6), (2, 3), (2, 4), (2, 5), (2, 6), (3, 6)]
joro
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