for (j = 0; j < n_group_vars; j++)
case_ordering_add_var (ordering, group_vars[j], SRT_ASCEND);
case_ordering_add_var (ordering,
for (j = 0; j < n_group_vars; j++)
case_ordering_add_var (ordering, group_vars[j], SRT_ASCEND);
case_ordering_add_var (ordering,