C3132121111133313233121111331333133313331333133313331333133313221323113121   >>    C313212111113331323312111133133313331333133313331333133313331322132311312   <<    C3132121111133313233121111331333133313331333133313331333133313221323113123   >>      C3132121111133313233121111331333133313331333133313331333133313221323113122   >>