#include<bits/stdc++.h>
using namespace std;

int n=8;

string p="RKRBBNQN";

vector<string> v;

map<vector<string>,string> bc;

void dfs(vector<string> vv,int d)
{
    if(d==5)
    {
        if(vv.size()!=1)
            cout<<vv.size()<<endl;
        return;
    }
    vector<vector<string> >best;
    int bmx=1e9;
    string bs;
    for(auto s:v)
    {
        vector<vector<string> >f(9);
        int mx=0;
        for(auto x:vv)
        {
            int c=0;
            for(int i=0;i<n;i++)
                if(x[i]==s[i])
                    c++;
            f[c].push_back(x);
            mx=max(mx,(int)f[c].size());
        }
        if(mx<bmx)
            bmx=mx,best=f,bs=s;
    }
    bc[vv]=bs;
    for(auto x:best)
        if(x.size())
            dfs(x,d+1);
}

string ans="RKRBBQNN";

void get(vector<string> vv,int d)
{
    if(d==5)
    {
        assert(vv.size()==1);
        cout<<vv[0]<<endl;
        int res=0;
        cin>>res;
        return;
    }
    string bs=bc[vv];
    cout<<bs<<endl;
    int ret=0;
    for(int i=0;i<n;i++)
        if(ans[i]==bs[i])
            ret++;
    cin>>ret;
    if(ret==8)
        return;
    vector<string> nv;
    for(auto x:vv)
    {
        int c=0;
        for(int i=0;i<n;i++)
            if(x[i]==bs[i])
                c++;
        if(c==ret)
            nv.push_back(x);
    }
    get(nv,d+1);
}

int main()
{
    srand(time(NULL));
    sort(p.begin(),p.end());
    vector<string> all;
    do {
        all.push_back(p);
        bool ok=1;
        for(int i=0;i<n;i++)
            if(p[i]=='K')
            {
                bool L=0,R=0;
                for(int j=0;j<i;j++)
                    L|=p[j]=='R';
                for(int j=i+1;j<n;j++)
                    R|=p[j]=='R';
                ok&=L;
                ok&=R;
            }
        int f=0;
        for(int i=0;i<n;i++)
            if(p[i]=='B')
                f^=i;
        ok&=(f&1);
        if(ok)
            v.push_back(p);
    }while(next_permutation(p.begin(),p.end()));
    dfs(v,0);
    // return 0;
    int T=100;
    while(T--)
    {
        string S;
        cin>>S;
        if(S[0]=='E')
            break;
        // ans=v[rand()%v.size()];
        cin>>S;
        get(v,0);
    }
}