AA:=VOL>REF(VOL,1); BB:=REF(V,1) CC:=REF(V,1) DD:=REF(V,1) EE:=REF(V,1) FF:=REF(V,1) GG:=REF(V,1) HH:=REF(V,1) II:=REF(V,1) AA AND BB AND CC AND DD AND EE AND FF AND GG AND GG AND HH AND II;