#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <set>

enum {P,W,F,B};
char str[] = "PWFB";
//hun: char str[] = "MBEH";

int main()
{
    int max = 4*4*4 * 4*4*4*4 * 7*7;
    std::map<std::string, std::vector<std::string>> m;
    std::map<std::string, std::set<std::string>> fbs;
    for(int i = 0; i<max; i++)
    {
        int n = i;
        int small = n % 7;
        n /= 7;
        int big = n % 7;
        n /= 7;
        int t[7];
        int c[4] = {0, 0, 0, 0};
        int p = -1;
        bool bad = false;
        int f = 0;
        int b = 0;
        for(int j = 0; j<7; j++)
        {
            t[j] = n % 4;
            n/=4;
            c[t[j]]++;
            if(t[j] == F) f = j;
            if(t[j] == B) b = j;
            if(t[j] == W && p != P)
            {
                bad = true;
                break;
            }
            p = t[j];
        }
        if(bad) continue;
        if(c[P] != 3 || c[W] != 2 || c[F] != 1 || c[B] != 1) continue;
        if(t[0] == t[6]) continue;
        if(t[0] == F) continue;
        if(t[6] == F) continue;
        if(t[1] != t[5]) continue;
        if(small == big) continue;
        if(t[small] == P) continue;
        if(t[big] == P) continue;
        std::string s;
        for(int j: t) s.push_back(str[j]);
        //std::cout << s << "\n";
        std::string sb = std::to_string(small) + std::to_string(big);
        std::string fb = std::to_string(f) + std::to_string(b);
        /*for(int j = 0; j<7; j++)
        {
            if(j == small) std::cout << "s";
            else if (j == big ) std::cout << "b";
            else std::cout << " ";
        }*/
        m[sb].push_back(s);
        fbs[sb].insert(fb);
        //std::cout << "\n\n";
    }

    std::map<std::string, std::vector<std::string>> m2;
    for(auto& [sb, strings]: m)
    {
        int small = sb[0]-'0';
        if(fbs[sb].size() != 1) continue;
        for(auto& s: strings){
            if(s[small] != str[F]) continue;
            if(s[6] != str[B]) continue;
            m2[sb].push_back(s);
        }
    }

    for(auto& [sb, strings]: m2)
    {
        int small = sb[0]-'0';
        int big = sb[1]-'0';
        for(int j = 0; j<7; j++)
        {
            if(j == small) std::cout << "s";
            else if (j == big ) std::cout << "B";
            else std::cout << " ";
        }
        std::cout << "\n";
        for(auto& s: strings){
            std::cout << s << "\n";
        }
    }
}