C11111333133313232233133313331333133313231313131211113313232111321   >>    C1111133313331323223313331333133313331323131313121111331323211132   <<    C11111333133313232233133313331333133313231313131211113313232111323   >>      C11111333133313232233133313331333133313231313131211113313232111322   >>