помогите срочно!!! Дам 20 баллов

1of, 2to, 3 on, 4 for, 5 at, 6 of, 7 in, 8 for, 9 about, 10 for
11 on, 12 of, 13 on, 14to, 15 after, 16 of, 17 of, 18 on, 19 of, 20 at
21 at,  22 after, 23 for, 24 on, 25 to, 26 to, 27 of, 28 in, 29 to, 30 for, 31 on