D2311231323331322331313232233132322331311221123231323132313233313231231   >>    D231123132333132233131323223313232233131122112323132313231323331323123   <<    D2311231323331322331313232233132322331311221123231323132313233313231233   >>      D2311231323331322331313232233132322331311221123231323132313233313231232   >>