{ 
    'key1' => { 
                lower => 0,
                upper => 10
                },
    'key2' => {
                lower => 10,
                upper => 15,
                lower_inclusive => 1,
              },
    'key3' => {
                lower => 15
                upper => 25,
                lower_inclusive => 1,
                upper_inclusive => 1,
              },
   }