C3132121111133313233121111331333133313331333133313331333133313311232121   >>    C313212111113331323312111133133313331333133313331333133313331331123212   <<    C3132121111133313233121111331333133313331333133313331333133313311232123   >>      C3132121111133313233121111331333133313331333133313331333133313311232122   >>