a. vase [1]
parameters changed: 2 gene pools (the z axis of the 4 circles; the radius of the 4 circles)
b. vase [2]
parameters changed: 2 graph mappers (to control the inner/outer shapes); count of perp frames (to control how many planes are there); domain end of construct domain (to control how many vertical planes to loft)
c. vase [3]
parameters changed: graph mapper; count of divide curve (to control how many circles are there); b input of multiplication (to control the bevel)