<Tr> <Td> MW </Td> <Td> Maldives </Td> </Tr> <Tr> <Td> NA </Td> <Td> Oman </Td> </Tr> <Tr> <Td> NB </Td> <Td> Papua New Guinea </Td> </Tr> <Tr> <Td> NC </Td> <Td> Paraguay </Td> </Tr>

How many digits does a license plate have