[seqfan] 010 is a permutation of 101 ?

[M. F. Hasler]

In  https://oeis.org/A272653
I can read, but not understand :
"since v = 010 is a permutation of u = 101".
Could this be explained differently?

I would have thought that, at least in the sense of this sequence about
"abelian squares",
the "permutations" of 101 would be 011, 101, 110.

(not even bragging about the fact that a permutation is a map, normally...)

- Maximilian