(;GM[1]FF[4]SZ[19]
GN[Prelude.]
PC[http://senseis.xmp.net/?BeginnerExercise6]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise6

Prelude.]
PL[B]

AB[aq][bq][cq][dq][er][fr]
AW[ar][br][cr][dr][bs]
LB[ds:a]


;LB[ds:a]
)
