D121212121213132333131232313232233131323223313233231333132313111231   >>    D12121212121313233313123231323223313132322331323323133313231311123   <<    D121212121213132333131232313232233131323223313233231333132313111233   >>      D121212121213132333131232313232233131323223313233231333132313111232   >>