Ebene -1 Ebene -2 r r-r-r r r r r-r-r T-r-r \| \ | |/ | | / r-r-r-r r r-r r r-r-r r | | /| |\ | \ / r K r-r r r r-r r-r-r-r-r | / | / r-r r-r-r r r | / \ | / r r r r r r-r-r-r-r-r / \ / | | | | | | r r r-r r r r-r r-r-r \ | | | | | | | \ r-r-r r r r r-r-r-r r r r | | / / \ / r r r r r Z | | | | \ / \ r-r r T k t t |