<Tr> <Td> Louise Brough </Td> <Td> 1946 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> </Th> <Td> Margaret Osborne duPont (2) </Td> <Td> 1949 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Louise Brough (2) </Td> <Td> 1949 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> 5 </Th> <Td> Louise Brough (3) </Td> <Td> 1950 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr>

What are the five grand slams in tennis