C11111333133313232233133313331333133313331322133313231323333321   >>    C1111133313331323223313331333133313331333132213331323132333332   <<    C11111333133313232233133313331333133313331322133313231323333323   >>      C11111333133313232233133313331333133313331322133313231323333322   >>