.
                                   wood
                             wood wood
                           wood wood wo
                          wood wood woo
                         wood wood  wood
                           wood wood woo
                           d wood wood  w
                           ood  wood wood
                           wood wood woo
                           d wood wood  w
                           ood  wood wood  
                           wood wood woo
                           d wood wood  w
                           ood  wood  wood
                           wood  wood woo
                           d wood wood wo
                  wood wood        wood wood
              wood wood woo   d  wood wood.    
                 wood wood          wood wood          
                       Wood.                 wood