From left to right, top to bottom: Global light curves of X7^c, X16B^c, X23^c, and X33^c. The light curve of X7^c does not show m_F225w and m_F275W measurements for clarity. The curves are folded using periods of 8.89 hours, 13.44 hours, 9.53 hours and 3.10 hours respectively, determined from Lomb-Scargle analysis performed on the global curves across all available filters. In each panel, the grey solid line is a combination of sines and cosines fitted to the data points with the only purpose of helping the visualisation of the light curve.