C11111333133313232233133313331333133313332321112111133132311321   >>    C1111133313331323223313331333133313331333232111211113313231132   <<    C11111333133313232233133313331333133313332321112111133132311323   >>      C11111333133313232233133313331333133313332321112111133132311322   >>