C31232233133313221211113313331333133313331212111133112211232311211   >>    C3123223313331322121111331333133313331333121211113311221123231121   <<    C31232233133313221211113313331333133313331212111133112211232311213   >>      C31232233133313221211113313331333133313331212111133112211232311212   >>