 Complete the following phrase:  On the Thursday before the Australian Grand Prix, the FIAs technical delegate Charlie Whiting declared the system to be legal. However, shortly before the final practice session on Saturday afternoon, representatives from Red Bull Racing and Lotus F1 approached the race stewards and requested that the FIA review the original verdict, claiming that the front wing system was in violation of Articles 3.15 and 3.18, which govern the use of DRS and driver-operated aerodynamic devices. On the Thursday before the 