D23312331311331313231323223313232113313113313331122313232213111   >>    D2331233131133131323132322331323211331311331333112231323221311   <<    D23312331311331313231323223313232113313113313331122313232213113   >>      D23312331311331313231323223313232113313113313331122313232213112   >>