C3123223313331322121111331333133313331311331133133313331311331121123311   >>    C312322331333132212111133133313331333131133113313331333131133112112331   <<    C3123223313331322121111331333133313331311331133133313331311331121123313   >>      C3123223313331322121111331333133313331311331133133313331311331121123312   >>