Hi Wakeling. Yes, it's a 2-step process. The group A answers alter the name 'N' into the name 'A', then the transformation of the same 5 letters results in S????
The names to be highlighted are L?????, O??? and P?????? - all of them are where the B answers have been swapped in, so not difficult to find.
I thought that Zeus was the one who turned N to stone ? L was the one who complained about the arrogance of N, but surely didn't have jurisdiction ?