Class 2 type stable or oscillating structures may be the eventual outcome, but the number of steps required to reach this state may be very large, even when the initial pattern is relatively simple.
2类的稳定或振荡的结构可能是最终的结果，但需要达到这个状态的步骤数目可能是非常大的，即使在初始模式比较简单的情况下。