C3132121111133313233121111331333133313331333133313331333133313232322211   >>    C313212111113331323312111133133313331333133313331333133313331323232221   <<    C3132121111133313233121111331333133313331333133313331333133313232322213   >>      C3132121111133313233121111331333133313331333133313331333133313232322212   >>