D1212111111112331313331313331323113132313232233132313232332323311   >>    D121211111111233131333131333132311313231323223313231323233232331   <<    D1212111111112331313331313331323113132313232233132313232332323313   >>      D1212111111112331313331313331323113132313232233132313232332323312   >>