Esperanto Suffixes - Are They Monosyllabic?

I know Esperanto has a lot of suffixing too, right? Are all of them monosyllabic or other? They are mostly monosyllABic. But again, that's a conlang and an oxlang to boot. I think my main point about bringing up that having polysyllabic suffixes or even single segment suffixes, which that depends on your syllable structure, whether you want to put those in or not. My point was that having everything be one syllable is a little bit unnatural and it's also a little bit boring.