D33131231211132322233231323132313232213231323223313223313231323221111231   >>    D3313123121113232223323132313231323221323132322331322331323132322111123   <<    D33131231211132322233231323132313232213231323223313223313231323221111233   >>      D33131231211132322233231323132313232213231323223313223313231323221111232   >>