D121213233313221323133313221323132333132313112211231211331323223311211331   >>    D12121323331322132313331322132313233313231311221123121133132322331121133   <<    D121213233313221323133313221323132333132313112211231211331323223311211333   >>      D121213233313221323133313221323132333132313112211231211331323223311211332   >>