Quasitruncated square tiling

The quasitruncated square tiling is a non-convex uniform tiling of the Euclidean plane. 1 square and 2 octagrams join at each vertex of this tiling. It can be formed by quasitruncation of the regular square tiling, with the squares seen as 4/3-gons.

Representations
A quasitruncated square tiling has the following Coxeter diagrams:

- (regular)

- (retrograde)

- (octagrams of two types)