D2311231323331322331313232233132322331311221123231323132313233312331   >>    D231123132333132233131323223313232233131122112323132313231323331233   <<    D2311231323331322331313232233132322331311221123231323132313233312333   >>      D2311231323331322331313232233132322331311221123231323132313233312332   >>