 Complete the following phrase:  After World War II, the team returned to Serie A by winning the Serie B championship of 194748. The new Palermo squad featured players such as Czechoslovakian legend Čestmír Vycpálek who signed from Juventus alongside Conti, Carmelo Di Bella and Pavesi. Palermo played Serie A until they were relegated in 1954. Massive changes in the board, as well as the managers job and the squad, proved successful and the club returned to Serie A in 1956. Palermo became a yo-yo club, bouncing up and down between the top two Italian leagues. Several stars played for Palermo during this period, such as Argentine striker Santiago Vernazza 51 goals in 115 games with the Rosanero, goalkeepers Roberto Anzolin and Carlo Mattrel, Giuseppe Furino and Franco Causio. Palermo marked its best campaign in 