If it helps to know for time sake, most synergies are material to material and don't require being on a specific bodypart/channel (except in the case of 3 material and 5 material synergies that transmute the center (body).) All the two material syngeries that work on head/body should work on leg/body or arm/body as well (unless theres a bug which some players have reported for the advanced rituals, i will eventually get to these). Of course, if you're recording all the channel edgecases with energy production as well then it's more complicated.
If you want to email me the chart before sharing it with folks feel free and I can tell you if anything on it is wrong or if you're missing an extraction on anything.