D12121323331322331313232223132313231333132313223313231311331323133112121   >>    D1212132333132233131323222313231323133313231322331323131133132313311212   <<    D12121323331322331313232223132313231333132313223313231311331323133112123   >>      D12121323331322331313232223132313231333132313223313231311331323133112122   >>