time_units: generations demes: - name: A epochs: - {start_size: 1} - name: B epochs: - {start_size: 1} - name: MacDemeFace epochs: - {start_size: 4, end_time: 999} - {start_size: 5, end_time: 99} - {start_syze: 99} - name: C epochs: - {start_size: 1}