#include #include using namespace std; #define rep(i,n) for (int i = 0; i < (n); ++i) #define Inf32 1000000001 #define Inf64 4000000000000000001LL int main(){ int _t; cin>>_t; rep(_,_t){ long long N,K; cin>>N>>K; K--; for(int i=1;i<10;i++){ rep(j,10){ if(i==j)continue; if(K>=N*8){ K -= N*8; continue; } vector pre,suf; rep(k,10){ if(i==k || j==k)continue; if(k < j)pre.push_back(k); else suf.push_back(k); } if(K>=N*pre.size()){ K -= N*pre.size(); cout<