(;GM[1]FF[4]SZ[19]
GN[iteration 4: seen_pos]
PC[http://senseis.xmp.net/?SimpleGo/version00]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SimpleGo/version00

iteration 4: seen_pos]
PL[W]

AB[eb][dc][ec][be][ce][de][af][bf]
AW[aa][ca][da][ab][bb][cb][db][ac][cc][ad][cd][ed]
SQ[ba][ca][cb][bc][cc][bd][cd][dd]


;SQ[ba][ca][cb][bc][cc][bd][cd][dd]
)
