C312312111111331312111133133313331322331333133313133313113313232233131   >>    C31231211111133131211113313331333132233133313331313331311331323223313   <<    C312312111111331312111133133313331322331333133313133313113313232233133   >>      C312312111111331312111133133313331322331333133313133313113313232233132   >>