hierarchy of questions use only white red black and gray colors on white background
hierarchy of questions use only white red black and gray colors on white background
hierarchy of questions use only white red black and gray colors on white background
a 3d pyramid with spheres on it
a pyramid with the words cao, cao, cao, cao, cao, cao, cao, cao,
a pyramid with the words livy sasasasyvy
a black and white pyramid with a red triangle on it