(;GM[1]FF[4]SZ[19]
GN[corner]
PC[http://senseis.xmp.net/?DieterVerhofstadt/TeachingExperiences]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?DieterVerhofstadt/TeachingExperiences

corner]
PL[B]

AB[ba][bb][bc][ad][bd]
AW[ca][cb][cc][cd][ae][be][ce]


;
)
