local function makeStep(y, z)
	wait(.2)
	local part = Instance.new("Part", workspace)
	part.Position = Vector3.new(0, y, z)
	part.Size = Vector3.new(10, .5, 3)
	part.Anchored = true
	part.TopSurface = Enum.SurfaceType.Smooth
	part.BottomSurface = Enum.SurfaceType.Smooth
	part.BrickColor = BrickColor.Random()
end

wait(6)
makeStep(2, 3)
makeStep(4, 6)
makeStep(6, 9)
makeStep(8, 12)