  Two de Rham complex sequences of the finite element spaces are introduced for
weak finite element functions and weak derivatives developed in the weak
Galerkin (WG) finite element methods on general polyhedral elements. One of the
sequences uses polynomials of equal order for all the finite element spaces
involved in the sequence and the other one uses polynomials of naturally
decending orders. It is shown that the diagrams in both de Rham complexes
commute for general polyhedral elements. The exactness of one of the complexes
is established for the lowest order element.
