<Tr> <Td_colspan="2"> </Td> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> </Table> </Td> <Td> </Td> <Td_colspan="2"> River Ainse (or Eyn) </Td> </Tr> <Table> <Tr> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> </Table> </Td> <Td> </Td> <Td_colspan="2"> A1067 bridge, Attlebridge </Td> </Tr>

Where does the river wensum start and finish