C13223313311212111133133313331333133313232233133313121111331333112322221   >>    C1322331331121211113313331333133313331323223313331312111133133311232222   <<    C13223313311212111133133313331333133313232233133313121111331333112322223   >>      C13223313311212111133133313331333133313232233133313121111331333112322222   >>