#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, 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