(;GM[1]FF[4]SZ[19]
GN[First L+1 Group]
PC[https://senseis.xmp.net/?BQM599]AP[GoWiki:2009]
DT[2020-01-16]
C[Diagram from https://senseis.xmp.net/?BQM599

First L+1 Group]
PL[B]

AB[cb][db][cc][bd][cd]
AW[eb][dc][ec][dd][be][ce][de][bf][cf]


;
)
