D11221123122332313123231323223313232233133311231232313232211331   >>    D1122112312233231312323132322331323223313331123123231323221133   <<    D11221123122332313123231323223313232233133311231232313232211333   >>      D11221123122332313123231323223313232233133311231232313232211332   >>