Embedding diagrams of the N=2 superconformal algebra under spectral flow

The embedding diagrams of representations of the N = 2 superconformal algebra with central charge c = 3 axe given. Some non-unitary representations possess subsingular vectors that axe systematically described. The structure of the embedding diagrams is largely defined by the spectral flow symmetry. As an additional consistency check the action of the spectral flow on the characters is calculated.