recompose this grid

testing results for: sql
lab05
GNU-Fed-i64
sql/test/wlcr12.038 
wlc01 X O0.773 
wlr20 X X0.951 
wlr30 X X0.335 
wlr40 X X0.325 
wlr50 X X0.326 
wlr70 X X0.330 
wlr100 X X0.324 
70375 (Nov2019)