Three Kingdoms of Bourdelot

Example

Input

Alice Bob 3 2 Alice Bob Bob Clare 2 Bob Clare Clare David 2 Clare David David Alice

Output

No

inputFormat

Input

Alice Bob 3 2 Alice Bob Bob Clare 2 Bob Clare Clare David 2 Clare David David Alice

outputFormat

Output

No

样例

Alice Bob
3
2
Alice Bob
Bob Clare
2
Bob Clare
Clare David
2
Clare David
David Alice

No