D1212111111112331313331313331323113132313232233132313231123313232231111   >>    D121211111111233131333131333132311313231323223313231323112331323223111   <<    D1212111111112331313331313331323113132313232233132313231123313232231113   >>      D1212111111112331313331313331323113132313232233132313231123313232231112   >>