C11111333133313232233133313331333133313231313131211113313231311331311123231   >>    C1111133313331323223313331333133313331323131313121111331323131133131112323   <<    C11111333133313232233133313331333133313231313131211113313231311331311123233   >>      C11111333133313232233133313331333133313231313131211113313231311331311123232   >>