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

Trapezium and other possibilities]
PL[W]

AB[hi][ji][hj][kj]
CR[kj]
LB[jj:a][jk:b][kk:c]


;CR[kj]
LB[jj:a][jk:b][kk:c]
)
