Loops performed in the CMD by the LPVs shown as examples in Figs. 8 (loops drawn in green), 9 (in blue), 10 (in magenta, only the source in the direction of the bulge is shown), and 12 (in red). The loops are drawn from smoothed fits to the G and colour time-series shown in these figures. The starting point is shown as a large filled circle for each source, and small filled circlesmark every subsequent 10-day interval. The Gaia DR2 source IDs are indicated next to each loop. The background grey points represent a random sample of 40% of the Gaia DR2 catalogue of LPV candidates, further plotted witha colour transparency of 15% to avoid saturation in the figure.