<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2016) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2016) (Learn how and when to remove this template message) </Td> </Tr> <Ol> <Li> Initial configuration </Li> <Li> Configuration at 33 years </Li> <Li> Configuration at 67 years </Li> <Li> Configuration at 100 years </Li> </Ol> <Li> Configuration at 33 years </Li>

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