D1212111111112331313331313331323113132313232233132313231221323223331   >>    D121211111111233131333131333132311313231323223313231323122132322333   <<    D1212111111112331313331313331323113132313232233132313231221323223333   >>      D1212111111112331313331313331323113132313232233132313231221323223332   >>