row group level value:  staring: 1 ending 3
row group level value:  staring: 3 ending 2
row group level value:  staring: 2 ending 3
row group level value:  staring: 3 ending 3
row group level value:  staring: 3 ending 3
row group level value:  staring: 3 ending 2
row group level value:  staring: 2 ending 0
