>surface
type=structure,ID=gen_good_one@chance=300
type=structure,ID=gen_good_two@chance=300
type=structure,ID=gen_bad_one@chance=300
type=structure,ID=gen_bad_two@chance=300
>nether
type=structure,ID=gen_good_one@chance=300
type=structure,ID=gen_good_two@chance=300
type=structure,ID=gen_bad_one@chance=300
type=structure,ID=gen_bad_two@chance=300
>end
type=structure,ID=gen_good_one@chance=300
type=structure,ID=gen_good_two@chance=300
type=structure,ID=gen_bad_one@chance=300
type=structure,ID=gen_bad_two@chance=300