C31232233133313221211113313331333133313331212111112113313223111   >>    C3123223313331322121111331333133313331333121211111211331322311   <<    C31232233133313221211113313331333133313331212111112113313223113   >>      C31232233133313221211113313331333133313331212111112113313223112   >>