Rebuilding 350cc 2001 EzGo, need help with piston ring install

i have a set of piston rings I had lying around from 2006 and I have a 99'
Rebuild manual
What I need help on is identifying which piston ring is compression and the wiper

One ring is completely grey and the other one have a silver machines edge on the outside
The completely grey one is perfectly square no beveled edge but the grey/machines edge one has a bevel to it on the inside

Also they have a small dot/ circle so really don't know top from bottom

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