D1212111111112331313331313331323113132313232233132313232313223311   >>    D121211111111233131333131333132311313231323223313231323231322331   <<    D1212111111112331313331313331323113132313232233132313232313223313   >>      D1212111111112331313331313331323113132313232233132313232313223312   >>