C1111133313331323223313331333133313233113313123121111132313233321   >>    C111113331333132322331333133313331323311331312312111113231323332   <<    C1111133313331323223313331333133313233113313123121111132313233323   >>      C1111133313331323223313331333133313233113313123121111132313233322   >>