int @tt;while(tt--){ll@N;string@X[N],@Y[N];int ln=1d9,pi=-1;rep(i,N){if(X[i].find('a')!=string::npos){if(Y[i].find('a')!=string::npos){wt("Yes");goto LABEL;}else{if(ln>Y[i].size())ln=Y[i].size(),pi=i;}}}if(pi==-1){wt("No");goto LABEL;}rep(i,N){if(X[i].find(Y[pi])!=string::npos){wt("Yes");goto LABEL;}}wt("No");LABEL:;}