C11111333133313232233133313331333133313231333133313113313331211112211222321   >>    C1111133313331323223313331333133313331323133313331311331333121111221122232   <<    C11111333133313232233133313331333133313231333133313113313331211112211222323   >>      C11111333133313232233133313331333133313231333133313113313331211112211222322   >>