#119: Cogs — "Pocket Watch"

Rules: Shade some cells so that each orthogonally connected area of shaded cells forms a cog: a shape with reflective symmetry on all axes (horizontal, vertical, and both diagonals). Cogs may not be orthogonally adjacent, but must all form a single diagonally connected network. The network of cogs must be “functional”, meaning there may not exist a loop consisting of an odd number of cogs. Circles mark the centres of some cogs. No 2x2 area may be entirely unshaded.