 Complete the following phrase:  Tyre supplier Pirelli provided teams with two new tyre compounds in 2018. Each of the 2017 compounds was made softer, with a new hypersoft tyre becoming the softest of the nine and a new superhard tyre to be the hardest. The hypersoft compound was marked by a pink sidewall, while the superhard was orange. The hard compound, which previously used orange markings, was changed to ice blue. The hypersoft compound made its début at the 