Rock can fold either symmetrically or asymmetrically. Bonds can be broken symmetrically or asymmetrically. The station building consists of cubes nested symmetrically and asymmetrically. Completing the semicircle are two symmetrically placed pairs of elephant tusks pointing upwards. Each side featured three large tires on symmetrically placed axles, with distinctive curved mudguards. Several structurally similar regions of a single RNA molecule fold together symmetrically. Sculptures were arranged symmetrically or in rows in relation to the architecture. The plastron, or lower shell, is yellow with dark blotches symmetrically arranged. The PFS has four antennae, arranged symmetrically around the forebody. Intermediary triple-arched porticos lead to usually two to four symmetrically located rooms. The "Juno" spacecraft uses three solar panels symmetrically arranged around the spacecraft. The other foot is then placed on the opposite thigh as symmetrically as possible. The symbol U with a vertical line placed symmetrically inside it symbolizes 'The Middle Path'. This allows the hairspring to "breathe" more evenly and symmetrically. Rocaille arabesques were mostly abstract forms, laid out symmetrically over and around architectural frames.