Galvagni Figures for Polyocts

A polyoct is a figure made of regular octagons joined edge to edge. A Galvagni figure is a figure that can be tiled by a polyform in more than one way—a kind of self-compatibility figure. Galvagni figures first appeared in Erich Friedman's Math Magic for November 2004.

Here are minimal known Galvagni figures for polyocts. The black tiles have no Galvagni figures.