D233123313113313113313222332313231323132322331323132211233132333132322223311   >>    D23312331311331311331322233231323132313232233132313221123313233313232222331   <<    D233123313113313113313222332313231323132322331323132211233132333132322223313   >>      D233123313113313113313222332313231323132322331323132211233132333132322223312   >>