D132311233131333131331123232233132333132313221323133313231323132233111   >>    D13231123313133313133112323223313233313231322132313331323132313223311   <<    D132311233131333131331123232233132333132313221323133313231323132233113   >>      D132311233131333131331123232233132333132313221323133313231323132233112   >>