D121212121213132313113313231123313232313231333131133131333131323223311   >>    D12121212121313231311331323112331323231323133313113313133313132322331   <<    D121212121213132313113313231123313232313231333131133131333131323223313   >>      D121212121213132313113313231123313232313231333131133131333131323223312   >>