D121213233313111323132322132312323131323132322331323132333132212121   >>    D12121323331311132313232213231232313132313232233132313233313221212   <<    D121213233313111323132322132312323131323132322331323132333132212123   >>      D121213233313111323132322132312323131323132322331323132333132212122   >>