Patching MFOS modular. Any potential for damage?

[Europanaut]

I've just finished my ninth MFOS module. All is going well. The module choices represent a range of the more common units. Oscillators, filters, ADSR, VCA, etc.

But as the potential for more complex patching increases, I'm wondering if any of this crazy routing can cause damage.

So, is there any patching combinations that should be avoided?

Audio to CV is ok, I assume.
CV to Audio in?
Triggers to?
Gates to?


Thanks!