| 108 / | HD | HORIZONTALLY SUPPORTED PLANAR SURFACES |
| 59 | DF | PLURAL RELATED HORIZONTAL SURFACES {11} |
| 162 | DF | .~ Foldable component {6} |
| 166 | DF | .~.~ Hinged horizontal surfaces {3} |
| 167 | DF | .~.~.~ Folded along lateral center line {3} |
| 170 | ![]() | .~.~.~.~ Surface section collapses between legs |