(;GM[1]FF[4]SZ[19]
GN[Pairs of common liberties]
PC[http://senseis.xmp.net/?ParitySeki]AP[GoWiki:2009]
DT[2010-11-24]
C[Diagram from http://senseis.xmp.net/?ParitySeki

Pairs of common liberties]
PL[B]

AB[aa][ea][fa][bb][fb][cc][fc][dd][fd][ae][fe][af][bf][cf][df][ef][ff]
AW[ca][da][db][eb][ac][ec][ad][bd][ed][be][ce][de][ee]
LB[ba:a][ab:a][cb:b][bc:b][dc:c][cd:c]


;LB[ba:a][ab:a][cb:b][bc:b][dc:c][cd:c]
)
