D23312331311331313231323131111233132322331311331323331323133313233313232213231   >>    D2331233131133131323132313111123313232233131133132333132313331323331323221323   <<    D23312331311331313231323131111233132322331311331323331323133313233313232213233   >>      D23312331311331313231323131111233132322331311331323331323133313233313232213232   >>