| # | Rule | Length (hap 1) | Length (hap 2) |
| 1 | All zinc finger arrays had i zinc fingers (fi = 1) | i | i |
| 2 | fi + fj ≥ 0.7 AND fi / fj < 2 | I | j |
| 3 | fi + fj ≥ 0.7 AND fi / fj < 3 AND fj / fk > 2 | i | j |
| 4 | fi + fj ≥ 0.7 AND fi / fj > 3 | i | i |
| 5 | fi ≥ 0.7 | i | i |
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