Upper-cell numbers are used in Nemeth for keyed items, so I would suggest putting the entire list in Nemeth. Put the opening Nemeth Code indicator (preceded by a space) right after the colon on line 2. Delete all of the other code switch indicators except for the final Nemeth Code terminator on line 12. There does not need to be a space between the Nemeth Code terminator and the closing transcriber's note indicator. Then, since the key is all in Nemeth, you will need to put an opening Nemeth Code indicator before the graphic on the next page and then terminate Nemeth after it, if needed.