D121213233313223313132322231323132313331323132233132313113313232231121   >>    D12121323331322331313232223132313231333132313223313231311331323223112   <<    D121213233313223313132322231323132313331323132233132313113313232231123   >>      D121213233313223313132322231323132313331323132233132313113313232231122   >>