function Block(CFrameValue)
    local NBlock = Instance.new("Part", workspace)
    NBlock.Name = "NBlock"
    NBlock.BrickColor = BrickColor.new("Dark black")
    NBlock.CFrame = CFrameValue
    NBlock.Size = Vector3.new(1,7,1)
    NBlock.Anchored = true
    NBlock.CanCollide = false
    NBlock.Material = "ForceField"
    game.Debris:AddItem(NBlock,3)
    local ByeNewPos = NBlock.Position - Vector3.new(0,NBlock.Size.Y / 2,0)
    local Bye = game.TweenService:Create(NBlock, TweenInfo.new(3,Enum.EasingStyle.Linear,Enum.EasingDirection.Out,0,false,0), {Position = ByeNewPos, Size = Vector3.new(1,0.001,1)})
    Bye:Play()
end

function BlockO(CFrameValue)
    local NBlock = Instance.new("Part", workspace)
    NBlock.Name = "NBlock"
    NBlock.BrickColor = BrickColor.new("Dark black")
    NBlock.CFrame = CFrameValue
    NBlock.Size = Vector3.new(1,0.001,1)
    NBlock.Anchored = true
    NBlock.CanCollide = false
    NBlock.Material = "ForceField"
    game.Debris:AddItem(NBlock,3)
    local ByeNewPos = NBlock.Position - Vector3.new(0,NBlock.Position + 6.999,0)
    local Bye = game.TweenService:Create(NBlock, TweenInfo.new(3,Enum.EasingStyle.Linear,Enum.EasingDirection.Out,0,false,0), {Position = ByeNewPos, Size = Vector3.new(1,7,1)})
    Bye:Play()
end

local Places = {Vector3.new(4, 0, 0),Vector3.new(-4, 0, 0),Vector3.new(0, 0, 4),Vector3.new(0, 0, -4),Vector3.new(4, 0, 1),Vector3.new(4, 0, -1),Vector3.new(1, 0, 4),Vector3.new(-1, 0, 4),Vector3.new(-4, 0, 1),Vector3.new(-4, 0, -1),Vector3.new(1, 0, -4),Vector3.new(-1, 0, -4),Vector3.new(-3, 0, 3),Vector3.new(3, 0, -3),Vector3.new(3, 0, 3),Vector3.new(-3, 0, -3)}

for i=1,50 do
    for i,p in pairs(Places) do
        Block(CFrame.new(15,0,0) + p)
        wait(3)
        BlockO(CFrame.new(15,0,0) + p)
    end
    wait(3)
end