 ![Snapshots of the initial condition and at 0.00, 0.0, and 0 Gyr. Gray scale shows the column density of the disk, and color points indicate cluster particles. Since these are only twelve colors but 00 clusters, we plot several clusters with the same color. The color points are as large as the cluster size to make the points visible. More than 00% of cluster-particles are still bound at 0 Gyr. \[fig:snap\]](snap0000new.eps "fig:"){width="00mm"} ![Snapshots of the initial condition and at 0.00, 0.0, and 0 Gyr. Gray scale shows the column density of the disk, and color points indicate cluster particles. Since these are only twelve colors but 00 clusters, we plot several clusters with the same color. The color points are as large as the cluster size to make the points visible. More than 00% of cluster-particles are still bound at 0 Gyr. \[fig:snap\]](snap0000new.eps "fig:"){width="00mm"} ![Snapshots of the initial condition and at 0.00, 0.0, and 0 Gyr. Gray scale shows the column density of the disk, and color points indicate cluster particles. Since these are only twelve colors but 00 clusters, we plot several clusters with the same color. The color points are as large as the cluster size to make the points visible. More than 00% of cluster-particles are still bound at 0 Gyr. \[fig:snap\]](snap0000new.eps "fig:"){width="00mm"} ![Snapshots of the initial condition and at 0.00, 0.0, and 0 Gyr. Gray scale shows the column density of the disk, and color points indicate cluster particles. Since these are only twelve colors but 00 clusters, we plot several clusters with the same color. The color points are as large as the cluster size to make the points visible. More than 00% of cluster-particles are still bound at 0 Gyr. \[fig:snap\]](snap0000new.eps "fig:"){width="00mm"} 