The performance of the NGOs, such as the SGI, is widely variable, such as, bi-dimensional wave, sky rocket, windmill, walking wall, walking pyramid, catapult, instantaneous stand-up pyramid, instantaneous stand-up tower, three-layers' plane tower, four-layers' tower, and rarely five-layers' tower.
formation | Command (military formation) | Elliot Formation | Lance Formation | Crato Formation | Chinle Formation | Two Medicine Formation | Tamayama Formation | Missing Man Formation (band) | Missing Man Formation | Marcellus Formation | Kirkwood Formation | Gettysburg Formation | Clarens Formation | Whitby Mudstone Formation | Tunbridge Wells Sand Formation | Santana Formation | Phalanx formation | phalanx formation | Mahantango Formation | Leduc Formation | Identity formation | Hanson Formation | Formation (stratigraphy) | formation (stratigraphy) | Formation | Centre International de Formation Européenne | Bakken formation | Yixian Formation | Vectis Formation |