D121212121213132322331323323132313231333132333131133132322121221   >>    D12121212121313232233132332313231323133313233313113313232212122   <<    D121212121213132322331323323132313231333132333131133132322121223   >>      D121212121213132322331323323132313231333132333131133132322121222   >>