FOP=[YR=1993] W20S12E20BAS=[YR=1993] W20 UOP=[YR=1993] N12W20S12E20$ W20S23 UOP=[YR=1993] S12 E20N12W20$E20 FOP=[YR=1993] S12E20 N12 W20$E20N23$ N12$.