C3123223313331322121111331333133313331333121211113313331313223332211331   >>    C312322331333132212111133133313331333133312121111331333131322333221133   <<    C3123223313331322121111331333133313331333121211113313331313223332211333   >>      C3123223313331322121111331333133313331333121211113313331313223332211332   >>