recompose this grid

testing results for: sql
lab05
GNU-Fed-i64
sql/test/wlcr10.482 
wlc01 X O0.541 
wlc20 X O1.239 
wlc21 X O1.249 
wlc30 X O1.235 
wlc40 X O1.235 
wlc50 X O1.238 
wlr50 X X0.548 
wlc70 X O1.237 
wlr70 X X0.339 
wlc100 X O1.241 
wlr100 X X0.337 
70121 (candidate-exceptions)