 Complete the following phrase:  The six artists first exhibited together in the spring of 1929 at Galleria Guglielmi in Turin. In November the same year they had two other shows at Circolo della Stampa in Genoa and at Galleria Bardi in Milan later to be known as Galleria Il Milione. A combination of personal and political disagreements eventually contributed to split the group apart, along with Gualinos decision to withdraw his ficial support following the 