C31232233133313221211113313331333133313331212111133133311232222121   >>    C3123223313331322121111331333133313331333121211113313331123222212   <<    C31232233133313221211113313331333133313331212111133133311232222123   >>      C31232233133313221211113313331333133313331212111133133311232222122   >>