 Complete the following phrase:  Prior to 1977, it was common for the federal Parliament to have up to three sessions, with Parliament being prorogued at the end of each session and recalled at the beginning of the next. This was not always the case, for instance the 10th Parliament 19261928 went full term without prorogation. The practice of having multiple sessions in the same parliament gradually fell into disuse, and all parliaments from 1978 to 2013 had a single session. There were only four prorogations since 1961, twice to allow the visiting Queen to open Parliament, once after the 