(;GM[1]FF[4]SZ[19]
GN[Exa. 4.2]
PC[http://senseis.xmp.net/?RobertJasiek/SolidConnection]AP[GoWiki:2009]
DT[2011-06-13]
C[Diagram from http://senseis.xmp.net/?RobertJasiek/SolidConnection

Exa. 4.2]
PL[B]

AB[dc][de]
AW[cc][cd][ce]

;B[dd]C[B1]MN[1]

;
)
