(;GM[1]FF[4]SZ[19]
GN[White takes up position on the fourth line]
PC[http://senseis.xmp.net/?StrongGroups]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?StrongGroups

White takes up position on the fourth line]
PL[W]

AB[dd][dj]
AW[pd]
LB[hc:a][id:b][fe:c][ge:d][he:e]

;W[fc]C[W1]MN[1]
;B[df]C[B2]MN[2]
;W[jd]C[W3]MN[3]

;LB[hc:a][id:b][fe:c][ge:d][he:e]
)
