C11111333133313232233133313331333133313231313131211113313231311331322233213321   >>    C1111133313331323223313331333133313331323131313121111331323131133132223321332   <<    C11111333133313232233133313331333133313231313131211113313231311331322233213323   >>      C11111333133313232233133313331333133313231313131211113313231311331322233213322   >>