D23312331311331313231323223313232113313113313231321123231323221231   >>    D2331233131133131323132322331323211331311331323132112323132322123   <<    D23312331311331313231323223313232113313113313231321123231323221233   >>      D23312331311331313231323223313232113313113313231321123231323221232   >>