D12121212121313231311331323112331322132313231333131133132313233313232233211321   >>    D1212121212131323131133132311233132213231323133313113313231323331323223321132   <<    D12121212121313231311331323112331322132313231333131133132313233313232233211323   >>      D12121212121313231311331323112331322132313231333131133132313233313232233211322   >>