recompose this grid

testing results for: sql
lab04
GNU-Fed-i64
sql/test/wlcr15.253 
wlc01 X O1.338 
wlc20 X O1.589 
wlc21 X O1.607 
wlc30 X O1.593 
wlc40 X O1.599 
wlc50 X O1.605 
wlr50 X X1.216 
wlc70 X O1.607 
wlr70 X X0.706 
wlc100 X O1.608 
wlr100 X X0.700 
70121 (candidate-exceptions)