Keywords: Tamari lattice, trees, with face labels.svg The associahedron of order 4 or K<sub>5</sub> the Hasse diagram of the Tamari lattice of order 4 with binary trees The knots of the trees correspond to the 2-subsets Own mate2code 2015-12-13 Associahedron K5 Tamari lattice T4 Hasse diagrams Binary trees |