C11111333133313232233133313331333133313231313131211113313231311331322323321   >>    C1111133313331323223313331333133313331323131313121111331323131133132232332   <<    C11111333133313232233133313331333133313231313131211113313231311331322323323   >>      C11111333133313232233133313331333133313231313131211113313231311331322323322   >>