从下列选取 [generation] [to the children] (1) [to the grandchildren] (3) [to the great-grandchildren] (6) [to the [nth (generation)] generation] (10) [to the [nth (generation)] generation] (13) [to the [nth (generation)] generation] (17) [to the [nth (generation)] generation] (24) [to the [nth (generation)] generation] (31)