Testcase 1:
Input:
20
1
2
4
2, 7, 10, 2, 15, 16, 1
1, 3, 11, 4
2, 15, 19, 4, 9, 12, 1
2, 6, 16, 9, 1, 3, 1

Output:
4
9, 10
15
8, 9, 10, 11
15, 16, 17, 18
9
8, 9, 10, 11, 12, 13, 14, 15, 16
1
4

Testcase 2:
input:
15
2
1, 2
4
2, 1, 6, 4, 13, 15, 1
2, 2, 8, 3, 4, 10, 1
2, 1, 3, 2, 4, 8, 3
3, 1, 10, 5, 8, 14, 2, 10, 11, 1

output:
15, 11
1, 2, 3, 4
13
2, 3, 4
10
1, 2
6, 7, 8
1, 2, 3, 4, 5
13, 14
10
8

Testcase 3:
input:
15
3
1, 2, 4
5
3, 1, 4, 3, 5, 10, 6, 11, 13, 1
3, 2, 5, 1, 6, 10, 4, 10, 15, 5
2, 3, 10, 3, 9, 14, 2
5, 1, 3, 2, 3, 6, 1, 3, 9, 2, 8, 8, 1, 9, 13, 2
3, 1, 4, 3, 5, 10, 6, 11, 15, 1

output:
3, 5, 12
1, 2, 4
5, 6, 7, 8, 9, 10
11
2
7, 8, 9, 10
11, 12, 13, 14, 15
7, 8, 9
10, 11
1, 2
4
7, 9
8
10, 11
1, 2, 4
5, 6, 7, 8, 9, 10
11
12