G cluster_junction Junction junction_push_1 push junction_exit_pull_1 junction_push_1->junction_exit_pull_1 junction_push_2 push junction_exit_pull_2 junction_push_2->junction_exit_pull_2 junction_pull_1 pull junction_pull_1->junction_push_1 junction_pull_1->junction_push_2 junction_pull_2 pull junction_pull_2->junction_push_1 junction_pull_2->junction_push_2 junction_input_outer_1 junction_input_outer_1->junction_pull_1 junction_input_outer_2 junction_input_outer_2->junction_pull_2