C11111333133313232233133313331333132313231323121111331311323221   >>    C1111133313331323223313331333133313231323132312111133131132322   <<    C11111333133313232233133313331333132313231323121111331311323223   >>      C11111333133313232233133313331333132313231323121111331311323222   >>