sentences:  Greco, like Calò, Marchese and Riccobono, kept his alliance secret from the likes of Bontade and Inzerillo.It was also in 1978 that Riina arranged for the murders of Giuseppe Di Cristina and Giuseppe Calderone, bosses of Riesi and Catania respectively.Both men were allies of Bontade and Inzerillo; their successors were allies of Riina, who sponsored them.