 In addition, we show that cascades can be rearranged so that homogeneous blocks can be lumped and represented by incomplete gamma functions.
<meaning-changed>  In addition, we show that cascades can be rearranged so that homogeneous blocks can be lumped and represented by incomplete gamma functions.
 In addition, we show that cascades can be rearranged so that blocks with similar rates can be lumped and represented by incomplete gamma functions.