C111123313121111121111331333133313331331121111133313331333133313233112131   >>    C11112331312111112111133133313331333133112111113331333133313331323311213   <<    C111123313121111121111331333133313331331121111133313331333133313233112133   >>      C111123313121111121111331333133313331331121111133313331333133313233112132   >>