Six jurors and four alternates were selected. The novel alternates between the voices of the two women, contrasting their worlds. Autumn alternates between wet and dry periods. Each time it copulates, it alternates heads in sets of two. There would be 12 jurors and six alternates. In form, the film alternates repetitively between marches and speeches. The race alternates its starting and finishing points each year. Vince often alternates between heroic and villainous characters. In PAL, the phase of the color subcarrier alternates on successive lines. It was offered with 'request' stylistic alternates imitating Helvetica more closely. The ratio of laity to clergy alternates every eight years. In the pulsed-current mode, the welding current rapidly alternates between two levels. The break-off alternates between players on successive frames. Service alternates game by game between the two players or teams. Traditionally, the presiding officer alternates between calling Members from the Government and Opposition.