#include<bits/stdc++.h>
using namespace std;
#define rep(i,j,k) for(int i = j;i <= k;++i)
#define repp(i,j,k) for(int i = j;i >= k;--i)
string closer,further;
string tmp,tmp1;
void output(int x,int y) {
    cout<<x<<" "<<y<<endl;
}
void check(string s) {
    if(s[s.length()-1] == '!')
        exit(0);
}
void work(int x1,int x2,int y1,int y2) {
    if( x2 - x1 <= 1 && y2 - y1 <= 1 ) {
        output(x1,y1); getline(cin,tmp); check(tmp);
        output(x1,y2); getline(cin,tmp); check(tmp);
        output(x2,y1); getline(cin,tmp); check(tmp);
        output(x2,y2); getline(cin,tmp); check(tmp);
        // assert(0);
        // printf("#%d %d %d %d\n",x1,x2,y1,y2);
        return;
    }
    int midx = (x1+x2)/2 , midy = (y1+y2)/2;
    output(midx,midy);
    getline(cin,tmp); check(tmp);
    output(midx+1,midy);
    getline(cin,tmp); check(tmp);
    output(midx+1,midy+1);
    getline(cin,tmp1); check(tmp1);

    int x1_n,x2_n,y1_n,y2_n;
    if( tmp == closer )
        x1_n = midx , x2_n = x2;
    else 
        x1_n = x1 , x2_n = midx;
    if( tmp1 == closer )
        y1_n = midy , y2_n = y2;
    else 
        y1_n = y1 , y2_n = midy;
    work(x1_n,x2_n,y1_n,y2_n);
}
void work1(int l,int r) {
    if( r-l <= 2 ) {
        rep(i,l,r) {
            output(0,i);
            getline(cin,tmp); check(tmp);
            output(i,0);
            getline(cin,tmp); check(tmp);
        }
        assert(0);
        return;
    }
    int mid = (l+r)>>1 , midd = mid>>1;
    output(midd,midd);
    getline(cin,tmp); check(tmp);
    output(midd+1,midd+1);
    getline(cin,tmp); check(tmp);
    if( tmp == closer ) {
        work1(mid,r);
    }
    else {
        if( tmp == further )
            work1(l,mid);
        else {
            output(0,2*midd+1);
            getline(cin,tmp); check(tmp);
            output(2*midd+1,0);
            getline(cin,tmp); check(tmp);
        }
    }
}
signed main(){
    output(0,0);
    
    getline(cin,tmp); check(tmp);
    output(0,1);
    getline(cin,closer); check(closer);
    output(0,0);
    getline(cin,tmp); check(tmp);
    output(1,0);
    getline(cin,tmp); check(tmp);
    if( tmp == closer ) work(1,1000000,1,1000000);
    else {
        output(1000000,1000000);
        getline(cin,further); check(further);
        output(999999,999999);
        getline(cin,closer); check(closer);
        work1(0,1000000);
    }
}