recompose this grid

testing results for: sql
lab01
GNU-Fed-i64
sql/test/wlcr16.389 
wlc01 X O1.337 
wlr20 X X1.616 
wlr30 X X0.603 
wlr40 X X0.581 
wlr50 X X0.584 
wlr70 X X0.586 
wlr100 X X0.582 
70375 (Nov2019)