import java.io.*;
import java.util.*;

class cc3 {

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }

    static int dig_sum(String s){
        if(s.length() < 2){
            return Integer.valueOf(s);
        }
        else{
            int sum = 0;
            for(int i=0;i<s.length();++i){
                sum += s.charAt(i)-'0';
            }
            return dig_sum(String.valueOf(sum));
        }
    }
    public static void main(String[] args) {
        FastReader fr = new FastReader();
        int t = fr.nextInt();
        while(t>0){
            --t;
            int n = fr.nextInt();
            int tot = 0;
            for(int i=0;i<n;++i){
                String s = fr.next();
                for(int j=0;j<s.length();++j){
                    tot += s.charAt(j)-'0';
                }
            }
            if(tot%3 == 0){
                System.out.println("Yes");
            }
            else{
                System.out.println("No");
            }
        }
    }
}