C1111133313331323223313331333133313233113313123121111132313113121   >>    C111113331333132322331333133313331323311331312312111113231311312   <<    C1111133313331323223313331333133313233113313123121111132313113123   >>      C1111133313331323223313331333133313233113313123121111132313113122   >>