My Pertec D3000-series manual lists all of these as being available:
6, 8, 10, 12, 14, 16, 18, 20, 24, 28, 30, 32, 36, 40, 42, 48, 56, 60, 64, 70, 72, 80, 84, 90, 96, 112, 120, 126, 128
I doubt any but the 12 and 16 were very common, but there's probably a few oddballs out there that use some of...