C3132121111133313233121111331333133313331333133313331333133313221312312121   >>    C313212111113331323312111133133313331333133313331333133313331322131231212   <<    C3132121111133313233121111331333133313331333133313331333133313221312312123   >>      C3132121111133313233121111331333133313331333133313331333133313221312312122   >>