So I'm doing an exercise that asks me to fine V0 in pic related using superposition. I know how the method works, what I'm having trouble with is the resistors. Assuming I start at the bottom by the current generator, the two other generators become short circuits, I get that, but then I'm just not seeing the relations between the resistors. Can I just say the 5? and 7? on the left are in parallel right away? or do I need to use some transformation, such as transforming one of the T sections?

Sorry if it's a dumb/easy question but I haven't touched circuits in a while and would appreciate if some kind anon would shine a light on how to proceed.