[G] For Spike + BoostPad, [N] For 1 Windmills, [O] For 5 Windmills, [H] For Turrets [F] For BoostPad, [V] For Spike, [P] For 4 Walls, [B] for Active/Unactive Auto Hat and [M] For 4 Spikes, [T] for Active/Unactive AutoHeal, [R] for Insta-Kill and [I] for 4 Trap or BoostPad !