Circle the tall people [Click for circle].
Circle the short people [Click for circle].
Drag 1 to the tall one and 2 to the short one.
Options: 1 2 1 2 1 2 1 2
Drag 1 to the tall one and 2 to the short one and 3 to the shortest.
Options: 1 2 3 1 2 3 1 2 3 1 2 3