1. The canon examples of {ngIq} only give a rough idea of its precise usage, so...

2. I only risk {ngIq} when I'm confident what I'm saying fits one of the canon examples. I don't thank that's the case here. All the examples that fit the "one after another" usage seem to imply "all of them, one at a time", like checking items of a list. I think the phrase "city after city" is less about a sequence and more about the idea that revolutions kept breaking out everywhere.

3. {ngIq vengDaq qaSchoHtaH Daw'mey} could mean that revolutions kept breaking out in a single city, like the Year of the Four Emperors. Or maybe the plural {Daw'mey} implies multiple cities. I'm not sure, because point number one.

But it looks like {vengDaq, vengmeyDaq je} isn't working, so I'll keep working on it.

bI'reng