D33131231211132322233231323132322132313231323223313223313232121   >>    D3313123121113232223323132313232213231323132322331322331323212   <<    D33131231211132322233231323132322132313231323223313223313232123   >>      D33131231211132322233231323132322132313231323223313223313232122   >>