recompose this grid

testing results for: sql
lab05
GNU-Fed-i64
sql/test/wlcr10.438 
wlc01 X O0.540 
wlc20 X O1.233 
wlc21 X O1.226 
wlc30 X O1.242 
wlc40 X O1.236 
wlc50 X O1.234 
wlr50 X X0.553 
wlc70 X O1.239 
wlr70 X X0.328 
wlc100 X O1.236 
wlr100 X X0.332 
70121 (candidate-exceptions)