C11111333133313232233133313331333133313231313131211113313332212321   >>    C1111133313331323223313331333133313331323131313121111331333221232   <<    C11111333133313232233133313331333133313231313131211113313332212323   >>      C11111333133313232233133313331333133313231313131211113313332212322   >>