C31232233133313221211113313331333133313331212111133131211111212112221   >>    C3123223313331322121111331333133313331333121211113313121111121211222   <<    C31232233133313221211113313331333133313331212111133131211111212112223   >>      C31232233133313221211113313331333133313331212111133131211111212112222   >>