This struck me like a thunder:

m{(?ix) (?=.*\bn/a\b.+\bn/a\b) (?=.*\bsata\b)}
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I thought that the span of application of (?ix) was the stuff inside the two parentheses (just like a contracted form of (?ix:)), but your regex clearly contradicts this. So I turned to the manpage and... it's there, nicely documented! I love this language.