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