1: 12 [[0,[]],[0,[]],[7,[2]],[0,[]]] 2: 12 [[0,[]],[0,[]],[7,[2]],[0,[]]] 4: 12 [[0,[]],[0,[]],[7,[2]],[0,[]]] 17: 12 [[0,[]],[0,[]],[7,[2]],[0,[]]] 18: 12 [[0,[]],[0,[]],[7,[2]],[0,[]]]