Events, at 131 Å, with HFRs formed during the eruption with (middle and right-hand columns; FLYP) and without (left column; FLY) preexisting prominence material. Top row: snapshots of the pre-event configuration. Bottom row: snapshots after the appearance of the HFRs. The images of the left-hand, middle, and right-hand columns correspond to events 70, 5, and 99 in Table 1, respectively. The arrows mark the HFRs. The field of view in each image is 300 × 300 arcsec².