Sorry for being silent, but this took longer than planned, due to repeated mistakes.

• Original: the main design, with lip cleft & forehead notch.
• Triangle: adds a triangular detail on the forehead notch.
• Plain: No “face” contour, no lip cleft and forehead accent.
• Pierrot: no lip cleft, permanently blind, with an optional mouth hole.

There are some more “minor” options, such as inverted colors and blinding eyepieces, for a total of 16 possibilities…