C31232233133313221211113313331333133313331212111133121111123133312121   >>    C3123223313331322121111331333133313331333121211113312111112313331212   <<    C31232233133313221211113313331333133313331212111133121111123133312123   >>      C31232233133313221211113313331333133313331212111133121111123133312122   >>