Networking Setup Question

I have a question that was posed to me by a teacher (I am currently studying Computer Network Management) and I seem to be lost in trying to answer it. Can anyone supply the diagram of the network and switches needed for this question. Thanks in advance for the help.

You are a network administrator on a large network with three different network segments with five switches each attached to your administrative network that has five switches, the largest of which is the root bridge of the network. Draw a diagram of this topology identifying how STP would work. Which ports would be blocked and which switches would be the designated bridges for each attached segment? Be sure to use some of the switches as redundant switches and identify them as such.