#ifdef DS
    #include "debug.h"
#else 
    #include<bits/stdc++.h>
    #define deb(...) 
#endif
using namespace std;
#define FOR(i,a,b) for (int i=a;i<=b;i++)
#define FOD(i,a,b) for (int i=a;i>=b;i--)
#define ALL(x) x.begin(),x.end()
#define NALL(x) x.begin()+1,x.end()
#define TIME "Time elapsed : "<<(double)clock()/1000<<" s"
#define int long long
#define vi vector<int>
#define pii pair<int,int>
const int MOD=1e9+7,INF=4e18;
#define maxn 
string s; 
void Try(int i,string cur)
{
    if (s[i] == '#')
    {
        cout<<cur<<"\n";
        return;
    }
    if (s[i] == 'S')
    {
        Try(i+1, cur + 's');
        if (i+1 < s.size() && s[i+1] == 'S')
            Try(i+2, cur + 'B');
    }
    else 
    {
        Try(i+1, cur + string(1, tolower(s[i])));
    }
}
signed main()
{
    #ifndef ONLINE_JUDGE
    freopen("thu.inp","r",stdin);
    #endif
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cin>>s;
    s += '#';
    Try(0,"");
}