Table 5.

Feature geometry for LHOR sub-structures of size 1.

Symbol	Features
$\stackrel{\prime }{\text{H}}$	heavy(x) ∧ stress(x)
Ĺ	light(x) ∧ stress(x)
H	heavy(x)
L	light(x)
$\acute{\sigma }$	stress(x)
σ	∅