D112331312123313232233131333131231323132313113313223313231213221   >>    D11233131212331323223313133313123132313231311331322331323121322   <<    D112331312123313232233131333131231323132313113313223313231213223   >>      D112331312123313232233131333131231323132313113313223313231213222   >>