Through 120: 2 hiqqahs, with bracket-based additions beginning at 125.
At 150: 3 hiqqahs, with further increases at 155, 160, 165, 170, 175 and 186.
196–200: 4 hiqqahs, with the same stepwise assessment continuing beyond 200.
The central mechanism is restarted assessment of the additional animals at each major stage.