 Complete the following phrase:  This class competed at its own medal events at competitions in the 1990s, before being grouped with other classes. LW1 was not grouped with other classes at the 1990 Disabled Alpine World Championships for disciplines that included the downhill. At the 1992 Winter Paralympics and 1994 Winter Paralympics, it was grouped with LW2 for mens para-Alpine events. For the 1996 Disabled Alpine World Championships, in Lech, Austria, it was grouped with LW3 and LW5 for medal events. At the 