User blog comment:Primussupremus/More on the construction of my notation./@comment-28606698-20170423084411/@comment-28606698-20170423091600

There are at least two ways:

1) Bowers's way: not only last entry is working, but all entries of array are working,

2) Saibian's way: only last entry is working, but rules for all cases are unificated: for arbitrary lenght of array and for arbitrary power of separators #^n inbetween entries.

In both cases, as I remember, only four rules in definition allows to reach w^w.