  In this paper we want to introduce two commutative diagrams for weight $n$=2
and $n$=3 with six faces on each. These diagrams describe the relations between
Grassmannian complex in geometric configurations, Bloch-Suslin's complex for
weight $n$=2 and Goncharov's complex for weight $n$=3 and the variants of
Cathelineau's complexes for weight $n$=2,3. Here we are putting all complexes
together to see a bigger picture.
