To conclude: Discusion has the density, the rich permutability, of certain cycles of poems, where each word takes on an extraordinary gravitation, what we have here of course being a "poetry" at the intersection of many fragments of poetry and non-poetry, of many textual activities.
An interesting, if perhaps irrelevant, aspect of solutions to this puzzle has to do with their relative degrees of permutability. In the first solution above, for example, two of the words (six and nut) have Collegiate-listed anagrams (xis and tun), meaning that it could have been expressed as any one of four different word sets.
Unlike Wenk, who believes that Debussy's musical setting is "an attempt to sort out the various phases and clauses that complicates ["Soupir"'s] grammatical structure" (249), I believe that Debussy's setting tries to imitate the permutability of Mallarme's syntax.