Three-dimensional reconstruction of two distinct loops before (top) and after (bottom) the flare, projected on the EUVI-B (left) and AIA (right) view. We plotted the centre of the loop (red point) on the solar surface, and the footpoints (green points) on the respective sides. The red line in STEREO-B images represents the limb as seen from SDO. The points obtained from the scc_measure.pro are plotted as yellow dots and the loop profile is given by a blue line. The movie available on-line shows the temporal evolution of the loops.