oh look its hex. read if your pro: hes a prepube newfag
apparently you havent learned that a^2 + b^2 = c^2. you could cut down a lot of blocks that way.
also if that prebuilt is 1 layer thick and that flag d has many unnecessary blocks and could use 8 2x3s and it would be more then 6 units tall, more then high enough to not get in.