Figure source: Focus Indicator Custom Shapes

All examples are 90px x 30px buttons, so have 480px2 minimum indicator area.

Passes: 3px inset, 3px thick

Indicator area = (84 * 24) - (78 * 18) = 612px2 > 480px2

Passes: 2 28px x 9px rectangles

Indicator area = 2 * 28 * 9 = 504px2 > 480px2