#include <iostream>
#include <string>
 
using namespace std;
 
int main() {
    string s; cin >> s; 
    int n = s.size(), cursor = n;
    int m; cin >> m;
 
    for(int i=0; i<m; i++){
        string input; cin>>input;
        if(input == "L"&&cursor>0) cursor--;
        else if(input == "D"&&cursor<n) cursor++;
        else if(input == "B"&&cursor>0) { 
            s.erase(cursor-1);
            n--; cursor--;
        }
        else if(input == "P"){
            string c; cin >> c;
            s.insert(cursor,c);
            n++; cursor++;
        }
 
        //cout << cursor << '\n' << n << '\n' << s << '\n';
 
    }
    cout << s;
}

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ZG1paAoxMQpCCkIKUCB4CkwKQgpCCkIKUCB5CkQKRApQIHo=

dmih
11
B
B
P x
L
B
B
B
P y
D
D
P z