Suppose that we want to negate a generic compound adjective adjective1 adjective2 Usage definitely favors the latter. Except non is not an english word, it is a prefix of latin origin
Which is why american style manuals will always ask you to merge it with the subsequent word, without a hyphen I might be tempted to create an open compound, but non doesn’t stand alone. In expressions in which figures and abbreviations (or symbols.
