hole -1.8 -0.8

tee 1.8 0.8

wall -2.01 -1.01  1.99 -0.99
wall -1.99  0.99  2.01 1.01
wall -2.01 -0.98 -1.99 0.98
wall  1.99 -0.98  2.01 0.98
