#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; for(int i=0;i<n;i++){ int a,sum=0;

#include<bits/stdc++.h> 
using namespace std;
int main(){
	int n;
	cin>>n;
	for(int i=0;i<n;i++){
		int a,sum=0;
		cin>>a;
		while(a){
			sum+=a%10;
			a/=10;
		}
		if(sum%7==0)
			cout<<"yes\n";
		else
			cout<<"No\n";
	}
}
		

	cin>>a;
	while(a){
		sum+=a%10;
		a/=10;
	}
	if(sum%7==0)
		cout<<"yes\n";
	else
		cout<<"No\n";
}

}