C11111333133313232233133313331333132313231323121111133311233131   >>    C1111133313331323223313331333133313231323132312111113331123313   <<    C11111333133313232233133313331333132313231323121111133311233133   >>      C11111333133313232233133313331333132313231323121111133311233132   >>